I've also enjoyed novels like Forgotten Conqueror, Speedrunning the Multiverse, Primal Hunter, Arcane Emperor, The Path of Ascension, and just about every novel under the "Strong Lead" tag.
I don't really care if the MC starts off already OP or gradually becomes OP, but I'd prefer them to have some sort of inherent advantage (reincarnation, affinity, system).
If you haven't already figured it out, I admit I might be looking for Gary/Mary Sues that can grant me wish fulfillment.
It'd be a bonus of the novel was heavily progressed so that I could really get invested into the world/characters.
I don't mind books on KU or other websites either.
Heck, RR search for the keyword "cheat" and you'll probably have thousands of fics to choose from.
Webnovel would also be a good place to look. All the OP MC stories post there as if by divine mandate flooding the site with them. You can't click on a fiction that doesn't have an OP MC in it.
It just started hence it is relatively short, only 13 chapters in.
The protagonist is certainly overpowered with his passive summoning power that gives him a horde of furry minions
MC can die and resurrect. Has a unique class that gives extra loot rewards from randomly generated quests. Can upgrade feats and spells using a currency gained through leveling. Doesn't get hungry or even have to go to the bathroom! (How OP is that?!) Saying anything more would spoil some goodies