Without thinking about it too much, I agree with you, though I'd like you to give reasons why for each, especially between the Gryffindor/Hufflepuff match ups (I believe the other two are fairly obvious.). For me I see the Beastmaster being associated with Gryffindor because they both have the attributes of fiercely protecting the things they love and stand for (Harry with his friends, Beastmasters with Straywood/Johktari.) I don't remember much about Hufflepuff (I believe Cedric was Hufflepuff? Correct me if I'm wrong.), but Cedric's noble sacrifice seems pretty in line with Preistess.
I apologize for all my incorrect Harry Potter references, it's been awhile.