Meaning; what type of elves are the Cumasti in Monster Manual terms?

So far I've checked DA 1 and the Rules Cyclopedia and found only the generic elf and sea elves (in the RC), but I might have missed a clue.

It seems to me the Cumasti could be either "High Elves" or "Wood Elves" or even possibly Grey Elves. Probably High Elves, but I'm wondering if there is any clear cut clue or what you guys think.

Blonde elves?

DA modules predate the Cumasti/Westryn split, which was a 3.x thing, IIRC. BECMI elves are elves (even factoring in Gaz5), until PC3, Gaz 13, and the Hollow World set came along.

I don't even remember 3.x having much of a split-amongst-the-elves aside from the drow... (but then, I sometimes have trouble remembering what I had for breakfast the day before.....)

I think it depends on how granular you want to play it. You could argue either a broad brush "one is High, the other Wood" or you could have them mixed, the distinction being drawn among tribe/clan/family lines.

Well.... I wouldn't put too much emphasis on physical differences between Cumasti and Western, as, after all, they split very recently, for being Elves.
Differences should be mostly, if not entirely, cultural and behavioural.