Medieval mods

Disclaimer: I tried to look at the mod suggestion list here but the link appears to be broken.

I'm looking to do a medieval (possibly including fantasy) run but I've not had much experience with that side of the game and have always found it a bit confusing. My first attempt a few years ago was a disaster, as so many base elements of the game were changed in ways I didn't expect and I was just confused and frustrated, and I also didn't start it with the correct scenario settings so I was getting raided by mechs and industrial enemies.

What combo of mods would people suggest that work well together without duplicating features or conflicting too much? I've tried another run based on Medieval Overhaul but with several others included that seem neat or highly recommended but have ended up not quite mixing too well. And I also didn't set the tech level properly, again. I swear that was made very easy by a mod ("World Tech Level" maybe?) but I don't remember where to find the options for it, as they didn't show up in the last scenario I created.