In Forgotten realms there are quite a few High Elves - Sun Elves: Regal looking, typically bronzed skin, they have hair colours of brown/red/copper/gold typically and their eyes are usually black, gold or silver - Moon Elves: Pale skin, often with a blue or purple hue, hair colours covering all human ones plus silver and blue, their eyes are usually blue or green with gold flecks - Star Elves: pale skin with gold, silver or red hair and tend to be particularly slender, their eyes are similar to moon elves
Wood Elves - Copper Elves: tend to be broader and sturdier, tan or bronzed skin, copper, brown, black or golden blond hair with eyes of green, hazel or brown. Wood elves are technically one of the only races of elves native to Faerun, the reason for this is they come from intermingling of Wild Elves with other elves over many generations. - Wild/Green Elves: tend toward darker skin tones from tanned to dark brown, usually have darker hair colour and eyes similar to copper elves.
Eladrin: Eladrin are Elves native to the feywild still, their appearance literally changes with the seasons, they look a lot like Sun Elves in terms of their regal appearance, but their hair, skin and eye colours change with the passing of each season, as does their personality.
Drow - Lolthian Drow: Shorter than surface elves, they're graceful and regal looking, their skin is almost always shades of obsidian, purple, grey. brown or blue undertones differentiate them though, their eyes are almost always red, with violet and amber being rare exceptions, their hair is always white or off white. Their colouring is part of a curse put upon them by Corellon for their actions around the early crown wars. - Dark Elves (Seldarine drow in this game): These drow have had Corellons curse lifted due to actions shortly before the spellplague. They have reverted to their original colourations (NOT how they're shown in the game) and look a lot like Wild/Green Elves for colouration.
Lythari: Esentially a unique non-evil breed of Elven werewolf that doesn't have a hybrid form, they're usually depicted as pale with grey or white hair both in elf and wolf form. But they're usually found in Wood Elf lands, so in theory make more sense to match their colouring to some extent.
Avariel: Winged Elves, their features are even more delicate than other elves, with eyes that are larger than most too, their eyes tend to be bright blues, greens or even purple, their skin colour isn't really described anywhere but the only art of them shown has been pale/tanned. Their hair and wings tend to be black/white/silver. Though the most well known Avariel, Aerie from BG2 has blond hair. Avariel are noted as being shorter than High or Wood elves in the same way that drow are.
Aquatic Elves: their build is probably the most sturdy of all the elves and tend to be tall. Their skin tends toward blues and greens, but sometimes browns or even silvers, their hair is usually blacks, greens, blues, browns or even red. Their eyes are usually black, blue, white, green or very rarely silver.
Regardless of the kind, they all have the angular features, almond eyes and pointed ears. None of them can grow facial hair or have body hair.
If Larian really want to include human ethnicities in the different elves, they should at least try and correlate the human ethnicities to those subraces and go from there. Right now the Elves are just /wrong/ and it's crazy because there are EXCELLENT resources available for multiple editions of D&D describing all the above.
Most notably for D&D 5e, Sword Coast Adventurers Guide which should honestly be a default inclusion for this game anyway, considering the setting.
The source for the above is Sword Coast Adventurer's Guide for 5e + Races of Faerun for 3/3.5 plus in the case of "Dark Elves" just my observations from lady penitent.