I think Moorer is 50/50 or 60/40 Moorer, he is the superior technician but Rahman could KO him, Spinks sweeps and then blasts him out, not competitive
They’d both outbox him, and potentially stop him, although Rahman has a solid puncher’s chance against Moorer, since he could get lazy with the feet at times, holding position and getting caught with rights.
Rahman would lose to both. Likely by stoppage. Moorer almost certainly turns his lights out. A better question is whether Rahman can even survive a guy like Alex Stewart.