I am currently using the Thermaltake TT Esports "Pro Gaming" Keyboard.
My Mic is a Blue SnowBall
Try going to Newegg and looking up "silent keyboard." Lots of cheap ones that seem to be what you're looking for. Try looking up reviews of the keyboards before you buy them, though.
Otherwise, the only thing I could recommend is getting a boom arm and shock mount for your microphone to filter out vibrations if you're having issues with the actually boom sounds made from your keyboard.
Where is your microphone positioned?
I ask because microphones operate based on the force of volume that hits their diaphragm. If the mic is on the desk anywhere near the same distance from both you and the keyboard, of course it will pick up keystrokes more noticeably because your voice isn't hitting with enough force, causing you to have the gain higher than it needs to be and thus picking up clicks. Most mics are best at around 6-8 inches from your face.
My keyboard is behind the mic, around 6 inches from my face. I think its because its directly behind it mihght be the problem. as it is closer to the keyboard than my face.
