Every game that supports FM music supports OPL2. Only few games were written to use the OPL3 (I think Descent is one, that I can think of right now. Even then, there's the option to choose the OPL2 in that game). Hence all games that supported OPL3 also had the OPL2 option in addition. In fact, if a game is said to support "Sound Blaster" in the specs label, it's understood to be OPL2. (With or without digitized voice support).
OPL3, though more advanced, did not last as long as the previous OPL generation due to the advent of General MIDI and the "wavetables".
You can simply choose the OPL2 option and compare with Amiga counterparts, even if the game has the option to use the OPL3 in the PC.
Amiga, though it had more sound channels in the beginning, against the OPL2 generaion SB cards, tended to sound monotonous due to heavy use of the strings synth across many games and started sounding monotonous. You come to know what type of music to expect even before you start playing the game. Yes, it was more realistic with digitized drum samples and so on in the MODs, but some samples were quite poor, and you can hear the distortion in these games. OPLx sound cleaner, though not as realistic sounding as the MODs.
Amiga captured the hearts of many in the sound department due to the capabilities of the sound chip to make use of the MOD-type of formats extensively from Day 1, which sounded more realistic - say the drums and piano against the weak FM sounds. And it also supported digitized voices, when all the PC users had was the Adlib. Or worse still, the PC speaker.
Of course, it would be unfair to compare MT-32/LAPC-I/SC being used in the PC with Amiga. It's just miles ahead.
And to add to my previous list :
4. Ultima VI
5. King's Quest V
6. Wing Commander
Versaitlity - a word that I would choose to describe the PC sound scene - during the reign of the DOS era. So many sound cards to choose from, and so many varieties. A programmer's nightmare, but a classic pc enthusiast's heaven.