I made a sortable list
https://www.wikitree.com/wiki/Space:A_sortable_list_of_popular_tags
It's a static list, not automatically updated.
Don't know if it's any use, as it's very incomplete. The threshold is about 25 posts. To go down to 10 would make it a much longer list, which would have different disadvantages.
See G2G Tag Talk for a list of recommended tags that's been maintained by WikiTree G2G Moderators. The list is divided into several subsections, each of which is alphabetized.