Hm, I went on coinmarketcap.com and filtered by PoW, and it shows Bitcoin (of course) and Dogecoin as being PoW with higher market cap. Next three are Litecoin, Monero, and Bitcoin Cash.

The last one I don't expect to work, because mining is about as profitable as Bitcoin, since both use the same algorithm, and the best relative profitability fluctuates between them, and they're both dominated by ASICs. But Monero deliberately avoids ASIC dominance.