Well... Intentional Grounding is an illegal forward pass. So that list of 5 is really 4. I try to stay away from that term.
Roughing the kicker or place kick holder are grouped together in the rule book... so that one is also a list of 4. Although, it makes no difference as long as you know 'em !
The other 5 I can think of is 5 conditions for PSK. There are also some other good 4's... exceptions to all but one, times to extend the period, and I have 4 times when the basic spot is the succeeding spot... but I think that became a 5 a couple of years ago.
I have long tried to keep numbered lists in my head... I'm starting to work away from that approach.