So because he had one pattern for both 1 and 2 he could be multiple kinds of Appaloosa if you reroll him, not just one that you'd get from 1 or 2. He could even get varnish with others because of having both.
So starting with Leopard complex its just saying whether it'll be an Appaloosa or not. The patterns determine what kind and it can be an Appaloosa without a pattern as well.
The Brindle part just tells you if it's Brindle positive
The phenotypes are things that are random and not breedable
As an example his tobiano is Toto. To guarantee his offing will have tobi, you need to breed him with a mare that has ToTo. Otherwise there is a possibility it could be toto
Sam Basically he's got nothing he is due sure in so if you want to keep any of his genetics you would need a mare that has birth of them otherwise it would be a 50/50 split or worse