Hello and welcome to Hollow Knight speedrunning!
You may notice that there are a few category proposals on these forums, and otherwise not much activity. This is because most of our discussion about meme categories happens in the #misc channel of the Hollow Knight Speedrunning Discord! (There is an invite link at the top of the page.) A few of the newer categories had no forum activity on this website at all.
When you join the Discord, find the #welcome channel and check the pinned messages for resources and answers to frequently asked questions.
Another note: we highly recommend running some existing categories before exploring the creation of a new one. Recording and submitting a valid speedrun will give you a better perspective on the full process.