There are (or have been) lots of 23cm rigs made.  It's the #1 repeater band in Japan today.  You can find some amazing stuff on the used market. Some examples (by no means a complete list):

HTs:

Icom IC-T81A (4 bands)
Icom IC-Delta1A (3 bands)
Icom IC-12GAT
Kenwood TH-59AT
Yaesu FT-911
Yaesu FT-104

Mobile:

Icom IC-1200
Icom IC-120
Icom IC-3700 (70cm/23cm)
Icom IC-Delta100H (2m/70cm/23cm)
Icom IC-901A w/UX-129A module (up to 6 bands)
Kenwood TM-742A (w/module, multiband)
Kenwood TM-741A (w/module, multiband)
Kenwood TM-842 (70cm/23cm)
Kenwood TM-841 (70cm/23cm)
Kenwood TM-942 (2m/70cm/23cm)
Kenwood TM-941A (2m/70cm/23cm)
Kenwood TM-541A
Kenwood TM-531A
Kenwood TM-521A
Kenwood TR-50
Kenwood TM-2400 (23cm/13cm, w/module)
Yaesu FT-2312R
Yaesu FT-2311R
Yaesu FT-6200 (440/1.2GHz)

Base:

Icom IC-910H (as you mentioned)
Icom IC-970H
Icom IC-1275A
Icom IC-1271A
Kenwood TS-2000 (as you mentioned)
Kenwood TS-790A
Yaesu FT-736R