EVERY SINGLE M-38 THERE IS!!!!!!!!
M-38C: The one with the markings, and just missiles. (The standard air superiority variant)

M-38B: The one with the airbrakes. (The interceptor variant which serves almost exclusively in the polar airbases of Anti-Los)

M-38E: The one with the Rockets, bombs, and allat stuff. (The strike variant, issued as a placeholder, while the M-40 was being developed, though it became successful with the export market later on)

M-38N: The one with the 2 big missiles. (Nuclear strike variant, made to take out ships carrying ICBM's)

M-38S: The one below with the regular delta wings. (Super variant that uses the M-40's avionics and stuff, made mostly for export, though Los still frequently uses them)

M-38T: The one with 2 seats (Trainer variant of the M-38, earliest variant developed)