Witches are not considered Illagers

Witches do not count as illagers. They cannot be patrol/raid captains unlike other illagers, they are attacked by "Johnny" vindicators unlike other illagers, and they can be damaged by evoker fangs unlike all other illagers.

This may be intentional, but I think it is an oversight. It seems like it would make sense for witches to be included as actual illagers, rather than just spawn alongside them in raids.