Donna Brazile & Hector Figueroa-President of SEIU 32BJ
(source below)

Both listed here as superdelegates. Source: https://en.m.wikipedia.org/wiki/List_of_Democratic_Party_superdelegates,_2016

Kevin Brown, Exec VP, SEIU 32BJ is also listed as Secretary to the Congressional Black Caucus Foundation Inc. in 2010, 2011, 2012

Donna Brazile listed as Board Member of Congressional Black Caucus Foundation Inc. Source here (scroll down to Congressional Black Caucus):

https://missionandvision.org/person/001180738/donna-brazile/overview

Source for Officers of SEIU 32BJ http://www.seiu32bj.org/officers/

I'll keep looking