@icstarsJTD said:
Base URL & Queries
I'm working on a project with my students

THANKS! :)
BASE URL:
https://image.tmdb.org/t/p/original/
Queries:
action movies:
/discover/movie?api_key=${API_KEY}&with_genre=28
Comedy movies:
/discover/movie?api_key=${API_KEY}&with_genre=35
Horror Movies
/discover/movie?api_key=${API_KEY}&with_genre=2
Romance Movies
/discover/movie?api_key=${API_KEY}&with_genre=10749
Documentaries
/discover/movie?api_key=${API_KEY}&with_genre=99

I don't think I could understand your question.

and these 5 URLS are requesting the same group of movies.

I believe this is not true. It's not necessarily the same group of movies.
They are movies with different genres.
Not all movies have these same genres.

Is there an updated list we should be deploying ?

An updated list of what?
Genres? Other Genres?

My apologies if I was not clear.

When we run the requests with those 5 URLs - they all return the SAME MOVIES - which are all from the Action genre. I'm looking for updated URLs if there are updated URLs.

I tested these IDs.

28  Action
35  Comedy
2   there is no such ID. 
10749   Romance
99  Documentary

I received different answers.
https://api.themoviedb.org/3/discover/movie?api_key=THE_KEY&language=en-US&page=1&with_genres=28
https://api.themoviedb.org/3/discover/movie?api_key=THE_KEY&language=en-US&page=1&with_genres=35
https://api.themoviedb.org/3/discover/movie?api_key=THE_KEY&language=en-US&page=1&with_genres=10749
https://api.themoviedb.org/3/discover/movie?api_key=THE_KEY&language=en-US&page=1&with_genres=99

Take a test here in the browser.
Just change THE_KEY to your API Key.

If you want the complete list of Genres, see here:
Films
https://developers.themoviedb.org/3/genres/get-movie-list
TV show
https://developers.themoviedb.org/3/genres/get-tv-list

I found out now what the problem is.
Your &with_genre= is singular.
Must be &with_genres=, plural

Amazing thanks so much