The next monocot family containing succulents is somewhat more familiar to the bulb growers:Amaryllidaceae
While most species under this family do not figure as succulents, a couple of species and genera do share xeric habitats with that of Aizoaceae(mesembs) as well as those native to other similar habitats and have some succulence within their leaves.
Genera bearing succulent species include: Haemanthus, Rauhia, Boophone, Clivia, Scadoxus among others.
Shade grown clivia
My own Haemanthus albiflos, succulent leaves.
Most of these have some sort of underground structure(bulb or modified stem) that lets them weather out the most of the harsh conditions which come with their habitat(by often having as little of the plant exposed as possible aboveground ) , often retreating to dormancy should the need arise. Flowers are often in a group atop a inflorescence, and vary in size and color, in habitat often during more favorable times.