Aldarc
Legend
These are the games that immediately came to mind for me.Old School Essential + Advanced OSE is probably the cleanest, most usable version you'll find for the moment.
My favorite take on OSR is Beyond the Wall and Other Adventures: it has a special feel and thematic to it that just speaks to me, I guess.
The Black Hack 2, while differing from basic D&D, is pretty darn good, quick to play and fun at the actual table.
O5R (5e adaption for retro-sensibility) are numerous and most of them are really well made. Some good examples: Five Torches Deep, Into the Unknown, and
one-other I cant seem to find that was just released (or Kickstarted?) that I think I saw here on Enworld, but I cant remember the name (help please!).
I would also potentially recommend Index Card RPG 2E. It doesn't have race/bioform as class, but it doesn't really have class. But it would be incredibly flexible to kitbash an "elf" starter package. It came from a heavily modified and stripped-down 5e D&D, but it has a fair amount of OSR sensibilities.