Just some team names for the Pittsburgh team:
Maulers- original USFL team
Predators- use of alliteration
Oilers- an ode to the origin of the American oil rush in western Pa in 1859
Vulcans- I saw this recommended earlier and liked it a lot. Also the mascot of Cal U of Pa.
Bridgers- For all the various bridges. Also used for the mascot of local Ambridge High School
Pathfinders/Pioneers- the lewis and clark expedition started in present day Pittsburgh
(Pathfinders is my personal favorite)