The older ones: Roland, Wave Blaster 1, the Sierra Aira, the Gravis. Also the Final Fantasy fonts. Got the SB AWE ones and the Live/Audigy ones from the original driver packs.
The AMD/Gravis InterWave (from Wikipedia):
The sound "patch set" was reworked from a collection of individual instrument .PAT files to a unified .FFF/.DAT sound bank format, resembling SoundFont, which could be either ROM or RAM based. There were 4 versions of the sound bank: a full 16-bit 4 MB with 8-bit downsampled 2 MB version, and 16-bit 2 MB (different sample looping) with 8-bit downsampled 1 MB version.
Optimally, there would be an accounting of all the fonts described here, here, and here. The ones that are being marketed should have links to web pages where they can be purchased, and ones that aren't (particularly the older sample sets that are difficult to dump and likely to die with the hardware) should be preserved on Facebook or Internet Archive (preferably both). In all things, we want to foster creativity through research and derivative work, and this means bringing order to the chaos of all the options available, so that the options may be rationally compared, contrasted and considered.
Ideally, there'd be enough information to determine where Super Famicom and PC Engine samples derived from, and how their creators conceived of them. It is evident from the FF7 AWE32 soundfonts that western produced synths played a major role, but we don't have enough information to understand the rationale for the sound choices. Given the small size of the 16-bit samples, I would think the sample roms from which they derived also very small in size.