I have experienced very mixed compatibility among chipsets when it comes to PCI sound card compatibility in DOS. There are event differences between Intel depending on how new the chipset is. Between Intel, VIA, SiS, and NVIDIA, the only way to know what it supported by your motherboard is to try various configurations and see what works.
I have a particular Slot 1 VIA motherboard where even the onboard Creative (Ensoniq) sound chip refuses to work in DOS, among almost ever other PCI sound card I tried. There are no hard rules when it comes to PCI sound cards in DOS, unfortunately.
If the DOS games you want to run will work in Windows, you can try some of these same sound cards using their legacy device drivers. Sometimes those are more stable than their DOS counterparts. For example, Creatives Live!/Audigy DOS drivers were unstable in my system or had bugs in games, but those same games work fine from within Windows.
Cards to try include:
Ensoniq / Creative AudioPCI
ESS Solo-1
Yamaha XG
Aureal Vortex
Creative Live!/Audigy
ForteMedia FM801
All of these cards have Sound Blaster compatible DOS drivers with varying degrees of compatibility between chipsets and PCI features.
All of these PCI cards have