Richard Youngs is the first person that comes to mind for me.
There's no one particular album you could play that would knock someone off their feet (Sapphie or Advent are maybe the closest things to hits?), but his career as a whole is one of the most impressive, genuinely experimental, strange and diverse ones out there.
There's a very English type of unselfconscious and mournful DIY that runs through everything, no matter what approach he takes. From radio noise to post punk to piano minimalism to noise guitar to folk music, the sound palettes vary wildly, but they all sound like Richard Youngs releases. There is no definitive Richard Youngs style, maybe more of an approach. Some albums can be total failed experiments, some can be outright annoying, but all of them add up to something that's much greater than the sum of its parts.
And outside of the solo albums, he's played large and small parts while collaborating with A Band, Skullflower, The Shadow Ring, Makoto Kawabata, Alastair Galbraith, Tape Hiss, Astral Social Club, Jandek etc. No single collaboration is definitive, but they all add up to a picture of a musician who has been threaded through all corners of underground music for decades, contributing to some of the most exciting music out there, seemingly unlimited by style or genre.
I will always check out a new release when I can, or pick something of his up if I see it in a shop, but never with the expectation that it will blow me away. More just to get another piece of the puzzle in place.
It would almost be quite unsettling if a 'hit' album came out now. Just having access to decades worth of very personal music with no grander vision beyond making a recording of whatever interests and excites him at the time is more than enough, I think. There's something much more impressive in a consistently adventurous but slightly uneven body of work spanning decades compared to one great album. There's more to discover and more to puzzle over, anyway, even if individual listening sessions don't always live up to the hype of the bigger picture.