It seems to be a very rare type! ^___^ An uke who is basically a rich brat (or a high ranked person if it's a fantasy type story), he's usually very pretty, has a willful, playful or manupulative personality and gets what he wants.

Examples:
Necratoholic
Kaoru Maniac
Ryuu no Yuigon

More, please.

P.S. If roles get reversed at some point, it's okay.

Here are a couple threads I found that may help you. They aren't EXACTLY what you are asking for but they involve Rich Uke's and some of them may be the bratty type. I am also going to add Blue Morning because I didn't see it listed.

http://www.mangaupdates.com/showtopic.php?tid=11502&hl =rich

http://www.mangaupdates.com/showtopic.php?tid=38127&hl =rich