For AT&T those definitely look like two RRHs, so a B2/B12 setup makes sense like you said.
As far as those low antennas that's a Verizon small cell setup, or at least one of them.
Actually none of their T-Mobile US's revenue is DT's. TMUS is an independent company and DT just owns 66% of the stock. They don't have access to TMUS revenue.jet1000 Today, 12:01 PM