That's about the size of it except for a group of single engine piston helicopters which, alhough they require separate type ratings, an LPC on one type of SEP will count for all the other SEPs you may have. However, the LPCs must be cycled round so that each type is covered eventually,
A multi-engine type rating is 8 hours and there is also an Instrument Type Rating.
Cheers
Whirls