I think there's no official stance on this, but I wonder if there's an accepted, semi-canon list of the peoples of the Forgotten Realms and their real world counterparts (that most likely inspired the FR ones, based on resemblance.)
The two peoples I'd most like to "identify" are the Damarans and the Chondathans. (Are Damarans "Russian" (or Slavic, in a wider angle)? Are Chondathans "Germanic"?)
(If it matters, though I don't expect it would, if all goes well, we'll play some FR based on – and deviated from, to suit our taste – the DnD 3.5 version. Definitely not 4e.)
Best Answer
The bottom-line is that no "official concordance" exists. However, a GM can readily draw lines to cultures of Forgotten Realms with "real world" analogs. Answering from the caveat "[of] whether there's a widely accepted list," one can turn to Wikipedia for some excellent cross referencing on Abeir-Toril and its continents, including notes on commonly accepted analogs, e.g.,
or
By no means official and at best loosely "semi-canon," Wikipedia may be a good start for a GM seeking to research cultural identities for immersion, which I believe to read as at the core of the question.
Robert E. Howard's notes on Hyboria include overlays of known continental maps and draws explicit relationships and commonly accepted analogs are made by Howard scholars (Wikipedia includes such a Howard "table of correspondence"; Del Rey's three volume Conan of Cimmeria work compiles some excellent scholarship on REH's Hyboria development). Warhammer FRP draws near explicit analogs to Renaissance, 16th and 17th century, Europe (see the above related question for more discussion by @aramis).
You may be hard pressed to find a canon link. And while no official concordance may exist, precedent seems to suggest that it is an allowable indulgence to believe analogs can be drawn (if only citing REH!). However, both Ed Greenwood and Jeff Grubb have made comments that suggest real world analogs can be made, but they are not making them. Grubb appears to at least suggest that real world concerns about relationships were at play in the publication of the "Old Grey Box" edition, going so far as to consult Wiccans and alter the FR pantheon relationships. Jeff Grubb writing on "Grubb Street" in Realms and Remembrance notes:
If nothing else, it would appear you certainly have permission to draw analogs as needed for your game without repercussions by the authors.