Not actually based in BKK myself (resident UK) but will be spending a little time there en route to Australasia for third time in as many years.
Seem to remember reading recently that Bangkok now sees more overseas visitors (for stays of various durations of course) than any other city (?) ; so, lots of opportunities for carriers from various parts of the world - which would explain your fascinating - and very useful - list of 5th freedom traffic rights. Would be surprised if any other airport can boast more !