Here’s how a grapevine worldview might be put together to achieve what you’re describing. 

I use follows & mutes (and reports and zaps and maybe more) to curate a list of pubkeys-who-are-not-bots.

I trust the not-bots list to use NIP-58 badges or NIP-32 labels to curate pubkeys who take on the “community authority” roles.

I trust the not-bots list & the comm-auth lists to endorse credentials, but I give relatively more weight to anyone on the comm-auth list.