These are the singlehose regs that I found until now:

Arctic
Arctic SE2
Arctic SEA
Aqua-Lung
Aqua-Matic
Aquadiv
Aquadiv Deluxe
Aqua-Lung Calypso
Aquarius
Calypso
Calypso J
Calypso III
Calypso IV
Calypso VI
Conshelf VI
Conshelf VI black (military)
Conshelf XI
Conshelf XII
Conshelf XII Arctic Explorer
Conshelf XIV
Conshelf 14 Supreme
Conshelf 20
Conshelf 20 Octopus
Conshelf 20 Supreme
Conshelf 21
Conshelf 21 Octopus
Conshelf 21 Supreme
Conshelf 22
Conshelf 30
Conshelf J
Conshelf SE
Conshelf SE Octopus
Conshelf SE2
Conshelf SE2 Supreme
Conshelf SEA
Conshelf SEA Supreme
Conshelf SS2
Conshelf Supreme
Deepstar
Deepstar II
Deluxe Aquamatic
Gulf
Hookah-Div
Hookah-Matic
Hookah Second Stage
Hydro-Lung
Hydro-Lung Supreme
Impulse
Micra
Micra Adj
Micra +
Navcon VI
Octopus
Pro Diver
Pro Diver Supreme
Professional Aquamatic
Royal Aqua-Lung
Royal Master
Royal Octopus
Royal Regulator
Royal SL
Royal Supreme
SEA 2
SE3
Sea IV
Select
Sport