I tried looking up “South Park” and got no results

But when I looked up specific characters(Kyle, Cartman, Kenny, Mr. Mackey, Mr. Garrison, Mr. Hankey, etc), results do pop up.

Considering South Park is a very mature show(which was why Squid Game, HH/HB, and Changed are banne), is SP blanket banned from Scratch? Or is it just NFEd?

(I also tried looking up “Family Guy”, and specific characters from THAT series, and got similar results. Is that blanket banned as well?)

Nether of those are franchise banned, if you aren't getting search results for them, then they might be blocked as search terms, as happens for a lot of music artist and band names.

some things aren't explicitly banned (as far as i know) but you can't search them (like blackpink)

This is probably a similar case to why FNAF is NFEd: It's not searchable because of the inappropriate content, but appropriate content is allowed.

From what I know, most of the banned franchises the ST has blanket banned are banned because the media in question is either extremely sexual or it's very difficult to make scratch-appropriate content of (or both); I can visualize a few ways to make a scratch-appropriate South Park project in my head, but with something like Hazbin it'd be more difficult to do that.

Should I try to get an official opinion from a Scratch Team Member?

I'm still unsure if I should be taking these risks

i would ask using the “Contact Us” button