The Community Hitlist is in essence a centralized project to focus on issues the community has raised, and the aim is to curate a list of these issues and actively take steps towards addressing them.
Unfortunately what those issues are can range from minor typos to rewriting whole functions of the game so there is a bit of prioritization that goes on with available time.
This is where it crosses over with GameJam projects, commonly there are Gamejam projects that started out to resolve an issue that developer had faced or seen the community was facing, so if a dev has started out a project to resolve something that is also on the community hitlist then it makes sense to carry on their work and get it out to players in these dedicated strikes.
So what you will likely see in these hitlists are some larger projects that take time to investigate and resolve, some game jam fixes that were in the works and could be picked up and other miscellaneous fixes.
The goal being to get changes and fixes out to players where possible while working on the issues players have been flagging up.