I'd most likely avoid anything that already has a GPU miner made for it. With the exception being probably Monero.
It's still a solid coin to mine with a CPU. It is also the only popular/successful coin that is still CPU-profitable.
I am not aware of other decent CPU-only coins though, so I'll let someone else fill that spot.
Thanks. It's weird that I cannot find any guides on hash rates with the Threadripper. Anyone else mining Monero with it?