@trumpetjazz,
If you need a high-end library for jazz brass instruments, then worth to look at
https://www.orchestraltools.com/store/collections/big-band-horns
There is an Expression Maps set for the Duplex Saxophones by @FredGUnn, here:
Another good sounding jazz brass instruments are those:
http://chrishein.net/horns-complete.html
Most probably those libraries will fit your needs, as they are jazz oriented. You’ll be able to apply the swing playback without any issues.
Best wishes,
Thurisaz 
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