Well I saw R5 R6 JPEG comparisons, seemed similar, but RAW files seem to behave differently. Tried C1, DXO. Canon's DPP which does the best job but very slow and clunky to use. So staying with LR, it is what it is and the files or certain cameras (mostly older ones) seem to work better than others as far as skin tones are concerned but I guess with enough skill it is possible to overcome it, it just would be much nicer if the journey there wouldn't be unpleasant...
I did try some hacked profiles like 1DX / 5D Mk3 Standard/Neutral for the EOS R, sometimes they work. Sometimes..
As a stills-only camera I don't have a lot of requirements, actually. The biggest problem with manual focus is that there likely won't be any pictures of me in the collection...
a) Should be FF to match my lenses (or in case of a Fuji GFX, some FF lenses still cover it)
b) I do appreciate if it is nimble to shoot with
c) RAWs that are nice to edit in LR would be the icing on the cake
d) Modern day conveniences like USB-C charging are neat, tilt screen, etc.
So even a Leica M9 should be mostly sufficient for with a replaced sensor, but pricey for what it is, other things to note, too, other electronics may fail, over time the rangefinder goes out of whack etc. etc, with the Leica SL2 i give up point b) even if I put small lenses on it, which is inconvenient.
As far as a hybrid camera is concerned, it's R5 all the way, with a 24-105/4 combined IBIS+IS it can be considered as a modern-day camcorder equivalent. No matter if the lens is new or vintage, 8k downscaled 4k HQ in-camera looks incredible (polar opposite of phone footage, masses of detail but zero sharpening, colors and contrast just pop without over-emphasis), and it is nice to have 4K 120p as well. R6II also great but not quite the same level (and not the same to handle either), afterwards with an R6 rolling shutter gets too high, etc.
Biggest idiosyncrasy is that there is no way to lock AWB (camera does a really good job, just drifts over time), and with the non-calibrated screen and EVF, it is slow and difficult to eyeball it manually.