Greek Mythology permeates Plato’s Atlantis story as it does virtually all Classical Greek writing. The challenge presented by Plato’s narrative is how to accurately separate the historical from the mythological. Carlos Parada has an interesting website(a), for those wishing to pursue a study of it, and also includes a few interesting pages on Atlantis. Another site worth a look is theoi.com(b).
The former chairman of the Texas Board of Education, Robert Bowie Johnson Jnr. contends that Greek mythology is a distorted version of biblical tales(e)(f).
Some commentators have remarked how many of the Greek (and Roman) gods morphed into Christian saints. Furthermore, after the fall of the Roman Empire, the Western Church also adopted many of the trappings of imperial Rome(d).
>A Companion to Greek Mythology, edited by Ken Dowden and Niall Livingstone is available on the Academia.edu website(g).<
I can also recommend Mark Cartwright’s Ancient History Encyclopedia(c).
The Etruscans were an ancient people of Etruria (now Tuscany) in Italy. They occupied an area somewhere between Rome and Florence from the 8th century BC until incorporated in the Roman Empire in the 2nd century BC. They do not appear to have been particularly expansionist as the only Etruscan settlement on Sardinia, which was not discovered until our 21st century, on the Tavolara isle off the coast near Olbia(o).
It is thought that they originally came from Asia Minor before 800 BC, a suggestion that originated with Herodotus. This view has been given recent (2007) support by the results of DNA studies carried out at Pavia University. Another study of Etruscan mtDNA estimated “that the genetic links between Tuscany and Anatolia date back to at least 5,000 years ago, strongly suggesting that the Etruscan culture developed locally, and not as an immediate consequence of immigration from the Eastern Mediterranean shores.” (e).
Stefan Anitei who supports an Anatolian, or more specifically a Lydian, origin for the Etruscans, cited “ A recent (2007) DNA analysis showed that (the Bos Taurus) cattle in central Italy seem indeed to have originated in modern Turkey and the Middle East. As there is no link between these cattle and others from other European regions, they must have entered the peninsula by sea.” (n).
Some decades ago Professor Licinio Glori also supported an eastern Mediterranean origin for the Etruscans(i). However, he has also claimed a common origin for the peoples of the Americas and Europe, including Etruscans, without identifying this shared ancestry(j).
It has also been suggested that the Etruscan culture has shown distinctive Indian influences.(l)
Until their written language can be translated there will remain an air of mystery about them. Even then because of the paucity of material available in their language, it is probable that little will be gleaned from it. Mark Cartwright’s excellent site has further information on the Etruscan script(k) and many articles on different aspects of Etruscan culture. A 2016 report(h) revealed the discovery of a stele that has at least 70 legible Etruscan letters and punctuation marks on it. Hopefully, this find will help to advance the translation of this language.
The site of the ancient city of Chiusi has been assumed by some to be the location of Clusium, the capital of the Etruscan king, Lars Porsena. This suggestion is based on the fact that the two names mean the same, namely ‘closed’. However, Giuseppe Centauro believes that he has found the real Clusium near Florence where he identified two concentric walls about 10 miles in circumference. The extensive walls have resonance with Plato’s description of Atlantis. If he is correct, Clusium may at one time have been the biggest city in Italy(f). Centauro is currently seeking permission to excavate there.
At Orvieto nearly 100km north of Rome, Professor Simonetta Stopponi is investigating the possible location of the Fanum Voltumnae, where the leaders of the Etruscan city-states met every year to discuss policy. This meeting has also got echoes of the regular meeting of the kings of the Atlantean federation.
It is worth highlighting that Tyrrhenia, the Greek name for Etruria, is one of the few places whose location is not disputed and is mentioned by Plato as bordering (Critias 114c & Timaeus 25b) Atlantean territory. It is, therefore, reasonable to expect that south of Etruria on mainland Italy some remnants of Atlantis may yet be identified.
In his recent book Richard W. Welch is quite happy to designate the Etruscans as “the last Atlanteans of which we have much knowledge”. Frank Joseph echoed the same idea, writing that “the Etruscans were themselves nothing more than the late Atlanteans who colonised western Italy, so their surviving material culture offers us a glimpse of Atlantis at its cultural height.”[636.21]
In 1962, the French linguist, Maurice Guignard, claimed to have deciphered the Etruscan language and also suggested that the Etruscans might have come from Atlantis. Such comments conflict with Plato’s account, which locates the territory of the Atlanteans separate from and further south than that of the Etruscans.
Confusing matters is a 2006 report from researchers at Stanford University, using “novel statistical computer modelling to simulate demographic processes affecting the population of Tuscany over a 2,500-year time span. Rigorous tests used by the researchers have ruled out a genetic link between ancient Etruscans, the early inhabitants of central Italy, and the region’s modern-day residents.“(s)
Recently, a study(t) by a team of scholars from Germany, Italy, the USA, Denmark and the UK, published in 2021 shows that the Etruscans, “were closely related to their italic neighbors, and reveal major genetic transformations associated with historical events.” However, they also note that “the persistence of a non-Indo-European Etruscan language is an intriguing and still unexplained phenomenon that will require further archaeological, historical, linguistic and genetic investigation.”
The late Steven Sora suggested  that the Etruscans were refugees from their original homeland in Iberia, where he also located Troy/Atlantis. He specified Lisbon, Setubal and Troia, all in modern Portugal, as Trojan/Atlantean territory, conflating the Trojan and Atlantean wars!
The internet offers a valuable site(a) giving a good overview of the Etruscans including a valuable bibliography and collection of related web links.
Another mystery relating to the Etruscans concerns an Egyptian mummy, which was bought in Alexandria and brought to Europe in the mid-19th century. When it was eventually unwrapped Etruscan writing was discovered on the linen!(q)(r)
>Professor Natalia Rosi de Tariffi (1907-?), Italian by birth, but lived in Venezuela, has highlighted the many similarities between the Etruscan language and that of Quechua and Aymara spoken in the Andes of South America. In her well-regarded 1969 book, America cuarta dimension  she proposed the migration of the Etruscans FROM America TO Europe.<
The controversial Italian researcher, Dr Mario Gattoni Celli, writing in the 1960s proposed that the Etruscans had voyaged to South America, basing his opinion on linguistic and other cultural similarities. This view is apparently supported by Diodorus Siculus (History, Book V, 19+) who refers to the ‘Tyrrhenians’ setting up a colony on an island, with navigable rivers, at a great distance from the inhabited world(c). Adding some confusion to this is the claim that Old World languages had migrated FROM the Americas!!(d) Alf Bajocco wrote a piece in Sykes’ Atlantis magazine on Celli’s ideas(c).
The most exotic suggestion regarding the Etruscans comes from Xavier Séguin who has claimed that they share a common ancestry with the Yoruba of West Africa, as both originated in Atlantis(m)! Séguin quotes the work of Leo Frobenius in support of this contention, highlighting the significance of the number sixteen in both cultures.
(c) Atlantis, Vol 19. No.1, Feb/Mar 1966
(i) St. Petersburg Times. Nov. 25 1957
(p) Atlantis, Vol.19, No.3, May/June 1966
(t) The origin and legacy of the Etruscans: A new study reports genome-wide data of ancient Italian individuals to trace the origins of the Etruscans and their contribution to later populations — ScienceDaily