I tried blocking AI bots from crawling my website using the list at github.com/ai-robots-txt/
The list includes several Google UAs:
Google-CloudVertexBot
Google-Extended
GoogleOther[-Image|-Video]
None of these should affect Google Search according to developers.google.com/search/docs/...
github.com
ai.robots.txt
A community effort to identify and block AI crawlers. - ai.robots.txt
