I have an absurd amount of graduates. Here's a bit about them.
Avery Bishop - 24. Ex Durmstrang Student. Dragon Trainer. Currently the object of a bet between two of her guy friends (over who will win her). She's pretty reserved, but is starting to get over that.
Carth Brownlowe - I'm about to drop him, but he'll be hanging out for a bit. He might be killed off soon. 22. Ex-Gryffindor. Trainee-Auror. Overly obsessed with justice, hates Death Eaters.
Keiran Hayes - 26. Ex-Slytherin. Current Head of Slytherin House/Transfiguration Professor. One of the guys fighting over Avery (he'll lose). Paired with one of his students for the marriage law (insert panicking here). Ex-Quidditch player and University-goer. Cares more about ambition than other Slytherin qualities.
Audriana Swan - 25 (recent birthday), has a job involving finding hard to find things/people but it isn't registered with the Ministry (basically a word-of-mouth type of thing. Like the movie "Hitch") Basically hates people, because she hasn't had anyone to care about her (openly anyways) since her sixth year at Hogwarts.
Ana Levski - 44. Created (well, it was mostly her) the Marriage Law because of her research as an Unspeakable. She was also an Auror for about ten years. She's a member of the Wizengamot, is having a secret affair with Elijah Krum and basically doesn't trust anyone.
Faye Sumner - 27, Ex-Gryffindor. Benefactor, wants to marry for money. Basically hasn't worked a day in her life. Sold her parents' estate when they died because she didn't earn it so she didn't think she deserved it (this isn't known by many people if anyone). She doesn't have any plots yet.