Below is the most junior pilot by base, aircraft and seat as of the seniority list published 9-15-18. ORD currently is the direct entry captain base on the CRJ and E-145, but this can change abrubtly. So coming here as a direct entry captain I would be ready for abuse.

ORD E-145:
CA: 7-2-18
FO: 7-2-18

ORD E-175:
CA: 5-22-17
FO: 9-10-18

ORD CRJ-700:
CA: 8-13-18
FO: 9-10-18

DFW E-145:
CA: 6-19-17
FO: 2-12-18

DFW E-175:
CA: 7-18-16
FO: 9-10-18

MIA E-145:
CA: 1-29-18
FO: 7-2-18

LGA E-145:
CA: 8-13-18
FO: 8-13-18

Note: We just had a vacancy bid close and all this is probably different now, a lot of DFW 175 and 145 slots were offered, so I can imagine is much more junior than what is shown above now