Many companies make dedicated Fighting Game controllers they often call "fight pads." These games have d-pads that are designed to be used for circular inputs, are wired for less input lag, and have layouts that place more buttons on the face of the controller. The most common and recommended ones are the Hori Fighting Commander, PowerA Fusion Fight Pad (thought the Xbox version seems to be perpetually out of stock), and MadCatz Fight Pads like the SFV Pro.

For me personally though, the best dpad I have used on a modern controller comes from 8bitdo. They make great feeling and very precise dpads. I would recommend the 8bitdo Ultimate or Pro 2. If those are too expensive, they just came out with the Ultimate C budget version.