Most of the time you can use the cutter's recommended feeds and speeds to start...but that is normally just your starting point. As far as the three tools you've mentioned...that doesn't give us anything to go off. Are they HSS, Carbide, coated, not coated, TNR?...you see....many variables...so just check with the tool manufacturer.
Looking over your post you don't even mention what stainless you are cutting. They vary widely in regards to speed and feed.