The profitable CPU-mined coins come and go. You have to catch the train when it pass. And beware, this is an high-speed train, not a steam-powered one ! I remember that in my short great period of mining, I catched two : ZCoin (XZC) and of course the great ZCash (ZEC). But unless you have a powerful CPU where Monero (XMR) might be a good opportunity, there is nothing now and probably for a long time !