Tyson was more like counter puncher from defense, for Tyson from 80 ies a lot liked that ppl had attempted to power punch him and he used counters and combos with a glance then. Style is relatively rare: good peek a boo. For me was not possible to pick it up properly, mainly cos background as KB for first striking base. If kicks are allowed it is not good style. Some automated things remains and you a bit watch for possible kick even if you do boxing.
Fury seems like the better inside fighter but Joshua is a more explosive puncher and a nice combination puncher. That means Joshua is a real danger at any range. But in terms of technical and sustained infighting abilities, Fury is better. Fury actually has more of an "inside" uppercut, he can slip a sneak uppercut in when they are closed together. Joshua's uppercut tends to require a little bit more space, though he might have improved and tightened it up. We shall see.
The best in measure skills, experience and current shape ! combination opponent A.J ever had was Ruiz Jr. Then look how he boxed Ruiz II fight, this was best fight in his life.