I don't think anything else has been pushed as far as the 737. The closest are probably the De Havilland DHC-8 and the Douglas DC-9/MD-80/MD-90/717, and maybe the DC-10/MD-11. The The Q400 had some pretty serious landing gear issues, the MD-11 was notoriously tricky to land, the MD-80 had that undocumented auto throttle issue, and the MD-90 had those extra flaps next to the engines.