I did have a second look at the categories. This are all subcategories of the top one.
https://wikitree.sdms.si/function/WTCatNavigate/Category.htm?Category=AncestryDNA%20Circles&Levels=3
They go into multiple levels, Some are not named exactly like others and maybe some of them shouldn't be deleted.
There is also quite some content on some of them and they are not only on profiles. They are also on Space pages. There are also inbound links from profiles and pages, that have to be removed manually.
So it is not something I could do fromm behind the scenes. It should be done in a standard way, categories are deleted. Probably some space pages will have to be deleted along the way.
So this should be done manually by adding {{Delete Category}} to each one and checking back later if any removal needs to be done manually.
If you select a person, that will do it for all 400 categories, contact category leaders to be authorized to delete them without confirmation.
Aleš