Answering the question, which trombone players I'd recommend to listen to, I discovered just how important sound and legato are to me. And how independent of genre.
After hesitating for a few moments, I mentioned three good examples, all of them jazz/commercial players:
- Urbie Green
- Dick Nash
- Bill Watrous
In the case of Dick Nash, it's often not even possible to find out on which studio recordings he plays on. But - oh, what a style!