The knots code is 99.9% the same as Bitcoin Core, there are only small changes such as filtering policies that stopped working some time ago in Bitcoin Core, you would have to ask the Bitcoin Core developers who are related to mining pools to explain it.
Discussion
Maybe.. I just wanna support the network in the best way possible
I moved from core to knots about 5 months ago.
Unfortunately I just trusted what is advertised as I have no means to verify the code myself.
I just checked that it is really a core fork, and compiled the code myself.
About setup, I just used the same bitcoin.conf file I was using with core.
I asked here on nostr and lukedashjr himself explained to me that the standard filters are enough and I didn't need to setup them if I didn't want.