Digging through Issac Arthur's Youtube Channel is probably a good idea. Specifically the
megastructures playlist
There's an idea in there for stringing together rotating habitats in long ladder like structures: they spin independently, but the non-spinning cases are connected.
Spinning artificial planet-sized disks are surprisingly doable, and distinct from Alderson disks.
Dyson Spheres have a lot of variation. There is the dyson shell, the dyson swarm, and the dyson bubble. They look and behave very differently.