playthroughs, challenges, card opening competitive, shiny hunting, and battles with a twist are some I can think of from the top of my head

Pokemon TCG related content, there are a lot channels with deck analysis, meta state, several rakings, deck demonstration, previews of coming sets, etc.

memes, challenges, Pokemon prop hunt.

Some people (including myself) make their own Pokemon regions

(I’m Ravenclawed07 btw)

I also watch tcg things too.