Sudden deluge of contacts in Messages and Phone after downloading 16.1.1

After downloading 16.1.1, when I search for a contact to try to make a call or send a text, I get a ton of superfluous contacts.

I get lots of email addresses that I need to scroll through in the phone app. And when I want to send a text and I search for a contact, not only do I get a ton of useless email addresses, but also I get every group my intended contact has ever been part of — included a “group” of two which includes MY phone number. So now I’m wasting a lot time when trying to text or place calls.