I appreciate the kind words! NEO Scavenger might be up your alley, but I have it on Steam and never actually played it, so I'm not sure how much emphasis there is on base-building.
If Cataclysm doesn't interest you due to the emphasis on needing a shelter/base, but you like a sci fi setting, you might like Cogmind (on Steam). You basically play as a robot building yourself from components you find and salvage from other robots. I don't think this one has any base building at all, it's purely a traditional dungeon crawler IIRC.
If Cataclysm doesn't interest you due to the fantastical elements like zombies and monsters, the first thing that comes to mind is Unreal World (also on Steam). It's not post-apocalyptic, but it's a similar open-world survival sandbox set in Finland in the iron ages. It has a lot more emphasis on realism and simulationism, but still has the core turn-based WEGO "roguelike" gameplay.