I used to play them a lot
It's a pretty niche thing but I also really like them, the satisfaction you get from beating them is just so good.
Also Kamilia 2 is really fucking tough. I think I started my playthrough in 2015 and took long breaks from playing it because of how tough it was (got stuck for hours on the boss rush)
I just finished it last year with pic related as my death count and timer
Have you tried "Not Another Needle Game"?