Okat aobut Teen Titans though no doubt its origins are not anime at all.But do you know who the drawers are?Maybe Japanese artists draw teen titans and thats why it looks animeish.And the opening is done my two girls from Japan so wouldn't pushing it off the site be wrong if just the origin isn't anime?Of course I don't know who draws the the show however,but the new writers of it have slaughtered it from its original glory but thats off topic.
No TT is drawn in the states and is purposefully made to look like anime to appeal to people like us (personally i think it tries to hard and thats why i dont like it

. it is produced AND snimated in the states.
The guy who created it is Glen Murakami who did Justice League Unlimited, Batman Beyond, Superman, Batman Gotham Knights, Batman the Animated Series and The Return of the Joker. Yes, he's asian in descent, but does not produce or contribute to Anime.