My advice would be to not wait for someone else to create communities would like to see, but create them yourself and just start posting. If you are not interested in moderating I’m sure you will be able to find someone else to take over.
You can post them in !newcommunities to get some attention, but like minded people will find you.
Do you need 3rd party tools to moderate on lemmy? Can you do it on mobile?
I have thoughts of starting some communities, but no point if I can't do it from mobile.
It depends on the different clients as most of them started developemnt just weeks ago, but all most popular ones support moderating actions. But Lemmy lacks some hardcore/automatic moderation tools at the moment.