Trying to wrap my head around fault code P0430 and P0420

[KRAM36]

My CEL came on bought Durametric Enthusiast Kit to read the codes. Here is what I got.

P0430
Porsche Fault Code 45 cat conv. efficiency bank 2

P0420
Porsche Fault Code 45 cat conv. efficiency bank 1

So I've been Googling these codes and the clear answer is eluding me to fix this.

I've read 02 sensors bad, cats bad and Valve lift fault (not sure what that means)? Read where these parts were replaced and the same code came back.

Now in combination with those I have this fault code also.

P0327
Porsche fault code 210 knock sensor 1

That's not hard to figure out, but could it be causing the other codes too?