Doesn't include switch which is the one plattform that is mostly used by a majority šš. But anyway, for me it's Switch, PC, Stadia & Xcloud/Gamepass.
PC went up to 75% in the last few years, the rest is Playstation 4 Pro and Playstation Vita (and Switch, which isn't listed in the OP). Since Microsoft moved all their games over to PC my Xbox hasn't seen much use outside of Rare Replay and the MCC. Doesn't mean I'm not playing XGS games, I'm just not playing them on Xbox because that seems to be the most limited and least capable platform to play XGS games on. I may even have played more games on Xbox 360 than on Xbox One this gen since all my save games are on there.
The reasons why I mostly play PC games are quite simple. Consoles cannot keep up with the incredible variety of PC gaming, it's just the same stuff over and over and honestly after a while it starts feeling more like work, like filling out Excel spreadsheets and waiting for the clock to tick down while everything on PC feels fresh and exciting in comparison. As proof I snapped a screenshot of my top ten most played Steam games:
I have a Gaming PC, Xbox One X, PlayStation 4 Pro and Switch
I mostly play on the Gaming PC, mostly due to Game Pass, and sometimes play on the XB1X.
The PS4 I haven't touched all year, there's only a handful of titles that interest me and at this point I'm waiting for PS5 to play them in a better state.
The Switch I just use for Smash when friends show up, but at least that's better usage than the PS4
PS4 + Switch + PC pretty much. Got a 3080 last week(upgraded from a 1080ti), and pre-ordered a PS5 already.
I do own an Xbox One, which I got at launch, but after MS started releasing exclusives on PC as well, it basically got relegated to a back compat box. I won't be buying an Xbox Series X/S either.
PC for simulation games and FPSes.
PS4 for exclusives and anything not covered by Switch and PC.
Switch for exclusives and indies.
I'm adding an XSX to the mix for exclusives (that I don't want to play on PC) and backwards compatibility to play all the Xbox games I've missed out on.