I don't have the Mamiya-7 anymore, and don't have an archived comparison photo (I thought I did), but here they are with a Mamiya-6, the "7" is about 1cm wider, and does not collapse. The FujiFilm GW690 series is definitely
big.
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Here is the Makina and Mamiya (without lens) from above, the Mamiya depth is just minimally larger, but you have to close the secondary shutter to remove the lens, which you can accidentally trip to open, so it's preferable to leave a lens on.
View attachment 379080
I do find the grip on the Mamiya-7 to be very ergonomic - it's easy to walk around with the camera in one hand. I cannot say the same for the Makina, but it's design goal was different. Personally, I find the Mamiya more "Leica" like than the FujiFilm, it has AE and a spot meter, controls are easier to adjust, it's fast and quick to capture fleeting moments. It also has a better viewfinder.
I think you will like the Makina, I bought mine way back when they were "just expensive", and I've never had the urge to sell it. You do have to take care of them more than the Mamiya or FujiFilm, but that goes with any folder. It has traveled a fair bit with me, especially when cycling, hiking or canoeing. On the other hand, the Mamiya-6/7 was great for things like weddings.
Most Makina-67s were manufactured by Mamiya, including the one above - the early Copal made ones often had issues.