I'm using a combination of On1 Photo Raw and Affinity Photo. (stopped my subscribtion to adobe a few month's ago)
Most things I can do in on1 Photoraw, and I'm using AF (affinity photo) if something extra is needed, or for focus stacking and panorama's.
Not everything is super, On1 doesn't have the same film simulations as fuji (it has some but they don't look the same). The raw previews in browse mode are not always correct. (in develop mode they are)
Affinity photo, is lousy when using it for raw development, slow, underexposes dr200/dr400 shots, or better said doesn't use them.
So for now I'm using photoraw for raw development and send the tif to affinity.
But one thing is sure, they work and the speed of on1 photo raw shows how far Lightroom is lagging.