I would generally suggest if you’re at all budget limited to consider not going full frame, even used the good lenses tend to be a lot more money. The second thing is from what I can tell, almost all cameras from the last 10 years or so can output the same color science and tones via editing the RAWs. Depending on your OS and RAW editor there are even some third party tools (for like 200 bucks or less) that can bulk emulate just about any other camera defaults for any camera. So again, if you want to save money, bang for buck is going to be getting better at editing and maybe buying specific software tools.
That all said, I also totally get it if you want to minimize editing and find another SooC jpeg engine more pleasing. Plenty of people get Fuji just because of that. However it’s pretty expensive to switch camera systems to change the jpeg output slightly so I would be pretty sure I really liked that output before switching. I would rent the system for a week and make sure it’s doing what I want, and compare the whole process of using the other system and make sure it works for me.
Of the listed Sony cameras, I think the only one I would consider worthwhile would be the A7Riii.
The Panasonic is rather video focused and the Fuji is completely different. For good SooC people do like Fuji, it’ll be lighter and smaller but probably not cheaper necessarily. It would help if I had some idea what you wanted the camera to do as the choices seem literally all over the map to me.