It may be the fairest and easiest for "average Joe" if normal PC can be used for mining.
Do you have an idea for an algorithm with this characteristic？
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.