Weather it's car repairs, or home repairs, always check the simplest things first

That sounds weird to me, so you'd have to have a separate breaker and a separate run of wire for every outlet?
I believe that when I built my garage(25) or so years ago, in Colorado, I thought the deal was the first outlet in a string had to be gfi, and that would protect the rest of the outlets on that line. I could be remembering this all wrong, its been a while.
Not quite like it sounds. GFI circuits are dedicated to a specific series of outlets. No other dedicated systems should be wired to it. In other words, an outlet in two bathrooms can be on the same GFI circuit, but the wall heater shouldn’t be. It should be on it’s own independent circuit with appropriate protections for it.

My garage outlet is on it’s own GFI curcuit. My kitchen has two GFI curcuit for each side of the room. My downstairs bathroom is on the same GFI curcuit as the master bath above it.

None of these circuits has any dedicated power for house systems on them. You get the idea.