I completed my simulator training on EFIS and the line training on a clock work flight deck 737-300. The type rating issued was 737-300 to 800 and when I renewed my licence last year the -900 was tacked on.
Islandsflug (the only people I am personally aware of) operate a mix of 300/400 aircraft 2 of the -300 have clock work flight deck an LPC covers them for 300/400 and both instrument presentations.