It would help to know the actual range of sweep you're looking for. If you want to stay with a "normal" mtb bar, there are several options around the 11-12° mark. I have a Bontrager Big Sweep (12°) which feels nice. If you want more, check out the Salsa Bend which comes in 17 and 23 options. The Crivitz (25°) that came on my Sawyer is super comfy. There are dozens of sweep bars out there, so more info would help folks narrow picks. You can also check out a couple of lists people put together of sweep bars, one at oldglorymtb.com and another somewhere on the mtbr.com forums.