We used a lot of speaker simulators: the Palmer and an old Marshall SE 100 and an SPL Transducer, which basically replaces your speaker bottom: you go from your speaker jack of your amp into one of these things, then right into Pro Tools or whatever you want to go into. About 85% of the guitars were done at home, so that was my system. In the studio we had the Peavey JSX bottoms and some old vintage bottoms I’ve had for a couple of decades, and we would sometimes go back to going direct, or we would use some combination of the cabinets with mics and stuff like that.
Speaker simulation and such has come along way. Of course there are a lot of examples of unlikely suspects providing utterly bad ass tones.