iHeart only has WRNW HD2 (WISN-AM simulcast) in Milwaukee now. They only use HD2 for translators, simulcasts, and 2 networks and occasionally for things like shifting formats to HD2.

WSHE had no HD-2 for a longtime until the WMVP simulcast.

WDRV has HD-2 (Deep Tracks) it should be simulcasting on 96.9 HD2 as well (They still ID it) but it's been down for almost a year. No idea why, but I believe it's technical trouble.

EMF tends to use their HD to it's fullest. 97.9 has HD2, HD3 and HD4. 103.9 has HD2 and HD3