For the current elves I am using Fireforge Games Teutonic Knights mixed with parts from Oathmark elves plastic kit. I've been interested in creating First Age miniatures for a long time (you can still find old posts from years back) without ever committing to actually creating any since I never quite settled on the aesthetic.
I've been a huge Tolkien fan before I even got into miniature wargaming and my favourite part of his legendarium has always been the tales of the First Age. My favourite of the characters of the First Age has always been the Feanorians, specifically Maedhros, although I like the characters of his brothers and father as well. I guess I have always liked the more grey characters in books and films. I know there are many book readers out there who (understandably I suppose) find the Feanorians despicable, but I see them as a uniquely tragic part of Tolkiens mythos. Not evil but driven to do terrible things by an unwise decision which they cannot retract.
On the miniature side of things I think the War of the Jewels period provides a hobbyist with an amazing opportunity to utilize many of the excellent miniatures out there as there is such a vast array of households/armies/factions.
Thats my best rambling attempt to answer your questions
thanks for taking the time to comment.