Squiffy,
Some additional info for your list:
Bristol Scout by MAC (several boxings), Pfalz D.III and D.IIIa by MAC, Breguet 14A2 and B2 by AZ Models, Nieuport 23 by Eduard, SPAD XIII early and late by Eduard, Ansaldo SVA 5 early and late by Fly, Salmson 2a2 by Choroszy, Phonix D.I, D.II and D.IIa by MAC, Roland D.VIa and D.VIb by MAC, Fokker D.VII by MAC (again several vesions), Roden Nieuport 24bis, Roden Nieuport 27, Roden Nieuport 24.
Al are injection molded except the Choroszy which is resin. I think all of these are still available either through hobby shops/internet retailers or e-bay.
Hope this helps.
Mike