The dome profile on these looks a lot like the Brookfield-made B.T.Co. of CAN. pieces. Note the "B" marked unit in Bushwick light aqua. The piece at far right looks a lot like some of these, but is likely from a different mold group. Shop marks L to R: None, the next four have a heavy and hard to read "8" next to a heavy raised dot. The last has a large reversed "11".