Not as slim but
Does have those ports. Run on Raspberry Pi OS, plus several other OS. I have no clue how secure it is nor Raspberry PI as long you don’t involve those other mentioned spywareOS.
I also have been looking for a tablet recently, from my bookmark, here
Not much tablet marketing in US, you prolly would have a better luck with EURO or UK online marketplaces. I have noticed there are more availability for laptops or notebooks in those countries than US despite of chips shortages.