He left to play with Jan Garber in 1935. Jack presently lives in California. Wright was known for his high tenor. Not much available on Wilson. Stoker was replaced in early '37 by Harry Babbitt.
Any names omitted are due to lack of info.
While it's true they were commercial, there were no better players, singers, or arrangements anywhere. The extraordinary height of success the band achieved on radio, records, film, and live appearances was well deserved, and self-redeeming.