I can’t see how a noise gate is a suitable tool to remove finger noise. Most noise gates (like the stomp effect gates) are either open or shut. When the input sound is above a threshold level they open and let everything through (including string noise). When the signal drops below the threshold they let nothing through. The Kemper’s input noise gate is more sophisticated and has a frequency conscious element which targets specific frequencies most notably 50hz and 60hz hum and other forms electrical interference from pickups. It might catch some string noise too but that is a lucky accident and has side effects on your tone so is likely to be an inefficient solution.
EQ and Definition are more likely to be suitable if used appropriately but even then it is still a sticking plaster solution to treat the symptoms not the disease.
In the old days with an analog pedal board running 4CM to a Mesa Triaxis I had horrific ground loop hum. The accepted wisdom was to use an ISP decimator noise gate. I got the rack mount decimator and tried but I found out the hard way that all it did was stop the hum when I wasn’t playing. As soon as I played the noise was still audible. Of course it was less noticeable because the actual guitar signal partially covered it but the noise was still there and still noticeable. The only solution was to bite the bullet and systematically check every single cable in the system then all the grounds etc. eventually I had to use an isolation transformer on the send or return and suddenly there was zero hum even without the noise gate. Long winded way of saying although it’s not what we want to hear the solution is alway to treat the cause rather than the symptoms.
I know you don’t want to hear this (I wouldn’t either) but the only worthwhile solution is to spend a bit of time improving your technique to eliminate finger noise at source. I don’t say this to be a smart arse or suggest that I am any better than you or anyone else. I say it because its true and although the truth sometimes hurts the good news is it is much easier than you probably think to improve this aspect of technique with a little focused effort. I would be surprised if you can’t reduce the finger noise to a manageable level in less than a month of practice as long as you apply discipline and actively focus on eliminating the noise. The even better news is that once you have done this it will become habitual and you won’t need to worry about sticking plaster work arounds in future. It’s worth the effort and short term pain for the long term gain. I wish you good luck with it 🤞