Which browsers support 307/308 redirects and how do they handle them?

Question

307 & 308 redirects (https://tools.ietf.org/html/rfc7538) is accepted by most modern browsers.

However upon google-ing a lot, I am unable to find a list of brows

Answer 1

All current browsers support 308s (AFAIU).

See https://greenbytes.de/tech/tc/httpredirects.