Default Trumpet is in Bb rather than C

I just realized that the 95% ratio I gave in my previous message is perhaps a little high because when we do classical rep and 19th century German rep - let’s say from Haydn to Brahms - we use Bavarian-made rotary valve trumpets in Bb. But of course, in terms of notation, they still have to transpose from whatever the part is written in. But still, the C horn is the go-to horn around here.