User blog comment:B214/Question and Answers 3/@comment-24098614-20140920095237/@comment-1359322-20140920215224

It's already more well rounded than Rias since Rias' team is undoubtedly just a team with pure destructive force, you can try to say that Issei's Wyvern is a technique type but in the end it still became one which focuses on a power attack (Longinus Smasher). As a matter of fact, Kiba is still the only "real" technique holder in that group.

Technique type isn't something like "oh he can use a few technique then he's a technique type", technique types are mostly those that focuses on stuff like controlling their powers, body movement etc rather than just focusing on attack power like what everyone in Rias' team is doing except Kiba.