...I don't care much about mechanics; I would never run these in 5e anyway. I just want to know which 3PP 5e campaigns I should read to loot for good ideas. My short list of ones that I know about and will probably read include Call From the Deep and Kobold's Empire of Ghouls...
If you aren't planning on running suggestions in 5e, why limit to reading 5e campaigns? There's a lot of well organized and written campaigns out there that don't use a 5e house layout.
That said, while I haven't run or extensively read these, some have mentioned Dungeons of Drakkenheim as being a campaign they enjoyed running. I've also been intrigued by what Metis Creative have published; they may be worth looking at as well.