Here's the list:
Xavier Becerra (D-CA)
Chris Murphy (D-CT)
Hank Johnson (D-GA)
John Tierney (D-MA)
Elijah Cummings (D-MD)
Mel Watt (D-NC)
John Adler (D-NJ)
Yvette Clarke (D-NY)
Tim Ryan (D-OH)
Chaka Fattah (D-PA)
Henry Cuellar (D-TX)
Frank Wolf (R-VA)
There's no prize for answering, but I will provide the answer by the end of the day if no one's come up with the solution. There's arguably one member who could be added to this list; if you've figured out who it is you can add it as a hint in the comments.