Ofsted test the school on the key points in KCSIE.
The only part that specifically mentions trans is around safeguarding against bullying (which links to EA.)
Anecdotally, locally, some seem to be a little overly invested in making sure children understand what the protected characteristics are.
We've literally been drilled on key questions we'd be asked by Ofsted, for example, and particularly, "who do you go to if you suspect the head of a safeguarding issue (chair of governors.)" if you suspect fgm, what do you do? (Teachers call the police themselves.)
Everything on KCSIE has come about due to specific instances of safeguarding failures where investigators could pin point where children fell through the loopholes. The website "Everyone's invited" triggered insertion of key guidance around sexual assault in schools, including primary.
Political capture means the dfe / gov doesn't yet see/ agree that social and medical transition of children is a safeguarding issue and currently would lead to extra protection for those pupils to safeguard against bullying.
We do buckets on online harms; this is eerily absent there too.