Several look to me to be a different style. Look again at the J; it's small and has narrow strokes. The C has a bulge in the center as a kind of serif. N is definitely sans-serif, as opposed to F, G, T, and L which have prominent serifs. Do you think the breaks in the lines forming the characters are only on those characters that would otherwise have "loose pieces" of the inlay to place? W has still a different kind of bulge in the center of the end strokes.

I am away from home and don't have Dale's book to look at but does he associate all those you show as a particular style?

I'm trying to assemble alphabet series of all styles as well, but you are way ahead of me [g].