Choices are quite limited, if you want to go with encoder knobs, rather than ones with pointers (I find pointers on encoders annoying, since the pointer has no meaning, for an endless encoder).
I went with these “Rogan-style” knobs from Modularaddict
https://modularaddict.com/pt2d-knob
(I think recommended by someone on this forum, actually).
They look quite nice, but I’d struggle to truly recommend them myself, as they of quite poor quality, I’m afraid, unlike the real deal, genuine Rogan parts.