Monero's new RandomX seems to be a hit for CPU miners.
But I'll warn you: there's a pretty high chance the CPU mining is unprofitable. Check your consumption, check the electricity price and do the math.
As an overall rule, from my experience, if a coin can be easily mined by anybody, usually the price will not rise (why buy when I can mine?), hence it's not profitable.
What do you think about Spacemesh, I recently discovered a project released 2 years ago. Based on POST (proof of space time), they claim energy savings.
Copy from their website:
Spacemesh is a decentralized blockchain computer using a new race-free consensus protocol that doesn't involve energy-wasteful proof of work.
We aim to create a secure and scalable decentralized computer formed by a large number of desktop PCs at home.
We are designing and coding a modern blockchain platform from the ground up for scale, security and speed based on the learnings of the achievements and mistakes of previous projects in this space.