M37 no dash, 3” and M638 J frames.
M10 K frame, 4” SB.
J, K and l frames in 357 magnum, 2 1/2”, 3.125” and 4” which will, of course , accommodate 38spl.
ETA: That’s S&Ws. If you’re counting all 38spls then I’d have to add a Colt’s Diamondback 4” and 2” Agent for a total of five stamped “38 Spl.”
Colt’s pictured below.