Focus mode - select contact groups

I want to know how to set up 2 different focus schedules, each of which blocks notifications from a whole contact group and not only from individual contacts. E.g., 8am-5pm, block "friends" and "family" contact groups; 5pm-8am block "work" contact groups. With hundreds of contacts, it's not feasible to do this per person, which is the only method the current Focus app allows.

Is this something the focus app can do via a workaround, or is there some 3rd party app with this function? The new "personal focus" and "work focus" options are a move in the right direction, but they are designed to only allow a few people, and don't work for whole swaths of contacts.

I've got 5 work contact groups and 6 personal contact groups, so an "allow 1 group only" or "block 1 group only" option wouldn't be sufficient.