Some of the Scratch-builders/ smaller firms include Cy Broman, J. G. Cottrel, Japan Utility Patent, John Lee, John Lindsey, John Youngerman, Miles Vaughn, Michael Aronson, Mike Fogarty, Nordic Custom, Paul Smaers. Rio Grande Navy, Richard Wagner, Ron Hughes, Uwe Jens-Hoppe, Van Ryper, Wommelsdorf, Leslie Osbourne, Hugh O'Connor, Ulrich Rudofsky and many unmarked or undecipherable.
I like to include wood ID ship makers such as A.T. Bradford, AD Services, Admiralty, Basset-Lowke, Cmdr Norman, Comet, Hugar, I.R.Amis, Parah, Phil Watson, Rowley, Sinclair, Stewart Reidpath, TJ Jones and many unmarked/undeciphered models.
Youngerman, Antin, Hughes, Nordic Custom, Hoppe, Lindsey, O'Connor, and Martin to name those I have at least 5 examples, and some others I'd have to check my shelf lists, and a number from "Unknown"
Youngerman, Buschman, Piel, Nordic Custom, Ron Hughes, Jens-Hoppe, to name a few