Of the cats we have at the moment, I'd say the Mewan (female) is the most affectionate and the most likely to sit on someone's knee. Snotcat (male) on the other hand hates knees and will fight to get off if placed on a knee. But Oedipus (male) sometimes can be determined to the point of annoying you to want to sit on your knee. And Bella (RIP but our last other female) was certainly not a knee cat...

As such, I'm not sure there are hard fast male/female cat rules for liking affection, sitting on knees, etc.

Ours are all neutered though. Maybe an unneutered tom is a bit more consistent? Wander away a couple of days and come back smelly with signs of being in fights...