You need bars that are round on the tops? That describes most every bar before 2010 and 70% of em made since.
Soma Hwy1.
Deda, nitto, ritchey, zipp, Salsa, fsa, 3t, Thomson, and more.
And this doesn't even include all the standard round top drop bars that are generic/private label from the common brands. Giant, Bontrager, C4, etc.