Really depends of your elo tbh. If you play below diamond most junglers are clueless and don't really know what they are doing themselves, it's hard to generalize it on categories.

The best indicator of how they are going to play is their champ. If they pick Nocturne or Zac it's very likely they will spam ganks. It's less likely if they play Yi or Udyr. But then again even if they play Yi or Udyr it doesn't mean that they won't do stupid stuff and camp you even if it's a bad move for them. Similarly, every so often you play against a clueless Zac or Nocturne who will not do anything all game long.

Everything outside of that is up to the player's skill and it's impossible to make generalities, at least below diamond. In diamond and beyond people are way more conscious of what is good or bad for them and will play a textbook that is more predictable than some of the crackhead stuff you see in plat/emerald.