[liberia]

> the current list of Mastodon servers feels very limited

Try this site: https://instances.social/

It helped me find some instances that matched my interests. Just keep in mind, most instances will die out if they're not sufficiently funded either by donations or the pocket money of the owners. This is why I treat all my Mastodon accounts as potentially ephemeral accounts that will die out given enough time. The more popular instances seem to be in it for the long haul, so go with those (as much as you enjoy the smaller instances).