I've kinda stopped following the overall EV market since we've got our two now and I don't expect to replace either for some years to come. So, my recent impressions of who is, and isn't, crushing EV sales has a lot to do with what I see on the roads in my neck of the woods, that being Michigan. If I had to base it on that, I'd say Tesla is killing it, Nissan is slipping fast, Kia is coming up, BMW has dropped the ball, and VW doesn't even exist. Edited to add: Silly me, I forgot Chevy. I do see a fair number of Bolts, although after the initial surge it doesn't seem to be growing very fast.
(The perennial comments about how Teslas are unreliable and German brand build quality is unimpeachable make me smile, considering we ended up buying our second Tesla before we had planned to because our GTI underwent rapid unplanned disassembly due to a quality problem. Nobody was hurt other than the car.)