I was looking at chemical guys hydroleather since it's synthetic suede and synthetic leather that should be good. Will need to wait until I get mine to test the underside of a seat to make sure it doesn't discolor it
I was thinking using Scotchguard but have not had a chance to test it out yet.
I will spray a small inconspicuous spot to see f it discolors or darkens the finish.
About a year ago, I applied Griot's Fabric Protectant per the instruction on the bottle, and it has held up very well. Small spills are easily blotted away without issue and water beads on the fabric.