@transpo1 Personally, if any of these hypothetical laptops should be the "MacBook", my pick would have to be the 15" -- the 13" Air is pretty much a staple and expected, and it paired historically with an 11" Air, but a 15" I dunno if I'd call particularly small and ultraportable.
Not that I'd imagine it would be at all
hard to carry around, I manage bringing my 15" PowerBook G4 around places just fine, but it would probably be a bit big for the Air moniker if we're dead set on introducing a third MacBook line. It would be IMO the ideal candidate for "didn't need the hyperportability of the Air, wanted a bigger and nicer screen, but didn't need the power or price of the M2 Pro/Max" that a suffixless MacBook to my mind suggests.