Olympus has a bar option:
https://olympusspeed.com/collections...rack-handlebar
Kaben, check out a Dolan DF4 (or DF3). They are pretty long, low, and affordable. Yes, there are some known issues - some have seat post slippage, but if you torque to spec (17-19nm) it's not a huge issue. And yes, the dropouts are short on the newer version.