As a UK interviewer I'd find them both unusual and annoying.
We already discussed you immediately after the interview. It's not going to change anything, but it might hurt your chances if it comes across as cringy or brown-nosing - we're also looking for cultural fit, and most Brits just don't do that. If you introduced new information in the email, you're probably going to force us to discuss you again, which is at best annoying and certainly burns up staff time.
So in a UK context, you're best off just saying "Great to meet you all - hope I'll get to work with you" at the end of the interview, and leave it at that.
We already discussed you immediately after the interview. It's not going to change anything, but it might hurt your chances if it comes across as cringy or brown-nosing - we're also looking for cultural fit, and most Brits just don't do that. If you introduced new information in the email, you're probably going to force us to discuss you again, which is at best annoying and certainly burns up staff time.
So in a UK context, you're best off just saying "Great to meet you all - hope I'll get to work with you" at the end of the interview, and leave it at that.