There are some models.
Roden F2b is a nice model. Besides, there are HB W.29 and few variants of Sopwith ¹/² Strutter by Eastern Express ex Toko (toko are better quality), Spad S.2 / 4 by A- Model (short run and a lot of work), Jenny by Olimp Models (I dont have it). Pegasus has few 2seaters as well, DH.4, F.2b, FB5 Gun Bus, Junkers CL.I, LVG C.VI. I have only FB5. It looks nice in a box, plastic and white metal parts.