A lot of games have a couple good tracks here and there but there are a handful that have amazing OST's from start to finish.
This is really hard for me to rank but I'm going to try and do my best.
#2 Super R Type, Probably the best OST you never heard.
https://www.youtube.com/playlist?list=PL72153D06B0B75736
#3 Secrets of Mana
https://www.youtube.com/playlist?list=PLFuN7I79hDh3VmVWEjf8zrudaLWRKCxAg
#4 Super mario brothers 3
https://www.youtube.com/playlist?list=PL6B16BD8C36B02A5D
#5 Saturn Bomberman
Probably the second most slept on OST of all time.
https://youtube.com/playlist?list=PLM61SnQMU4vyWQfKf87AZgHNDx8dy8ssh
Runners up ( ironically these are all the same genre)
Street fighter 2 ( I went ahead and used the SNES version)
https://www.youtube.com/playlist?list=PL709C66DD40795D4F
Street fighter 3 3rd strike
https://www.youtube.com/playlist?list=PL2D4C428C2C10BCFF
Marvel vs capcom 2
https://www.youtube.com/playlist?list=PL9F2DBBF9C309E1B6
Capcom vs Snk 2
https://www.youtube.com/playlist?list=PL3A40C889EDC64C9B
This is really hard for me to rank but I'm going to try and do my best.
#1 Chrono trigger
https://www.youtube.com/playlist?list=PLSHMcAUZYM-7vN5kvYQ_032Vdp1zRWETw
https://www.youtube.com/playlist?list=PLSHMcAUZYM-7vN5kvYQ_032Vdp1zRWETw
#2 Super R Type, Probably the best OST you never heard.
https://www.youtube.com/playlist?list=PL72153D06B0B75736
#3 Secrets of Mana
https://www.youtube.com/playlist?list=PLFuN7I79hDh3VmVWEjf8zrudaLWRKCxAg
#4 Super mario brothers 3
https://www.youtube.com/playlist?list=PL6B16BD8C36B02A5D
#5 Saturn Bomberman
Probably the second most slept on OST of all time.
https://youtube.com/playlist?list=PLM61SnQMU4vyWQfKf87AZgHNDx8dy8ssh
Runners up ( ironically these are all the same genre)
Street fighter 2 ( I went ahead and used the SNES version)
https://www.youtube.com/playlist?list=PL709C66DD40795D4F
Street fighter 3 3rd strike
https://www.youtube.com/playlist?list=PL2D4C428C2C10BCFF
Marvel vs capcom 2
https://www.youtube.com/playlist?list=PL9F2DBBF9C309E1B6
Capcom vs Snk 2
https://www.youtube.com/playlist?list=PL3A40C889EDC64C9B