Pharos 137 (WM 6.1/6.5), Nokia N900 (Maemo 5), Google Ion (Google-branded myTouch 3G), and i7500 (unbranded Galaxy) have T-Mobile 3G.
The myTouch 3G is similar to the G1 except it has more ROM (for apps) and no keyboard. RAM, screen size, and OS are the same.