most of the standard ceramic disc capacitors are NP0/C0G type?
There is nothing inferior about Wima or Kemet products unless you believe low cost and wide availability are minuses.
If you will feel better by spending more on obsolete dielectrics, try polystyrene film/foil: FSC 160V 100PF 2.5% - LCR COMPONENTS - Film Capacitor, FSC Series, 100 pF, ± 2.5%, PS (Polystyrene), 160 V | Newark element14
or silvered mica: CD15FD101J03: 100pf Dipped Silver Mica Capacitor: Jameco Valuepro
Personally, I would never use low voltage polyester (MKT or greencaps) for compensation caps. Mica and polystyrene types may also not be technically as good as PP film types but some find the small distortion increases useful. Just keep voltage ratings as high as possible within sensible size limitations and performance will be acceptable. In any case, typical VAS compensation caps will need to be rated ≥ the rail-rail voltage supply of a conventional audio amp.
I have used polystyrene capacitors for comp but the sound became more unforgiving. It was not hyper detail but it was showing the mistakes of the mix engineer. I would prefer the polypropylene may be in that location or need to try MLCC Radial C0G type cap.
I don't use polystyrene for Miller compensation. I think it is "distortion", not being "unforgiving".
Problem with polystyrene is I think not every manufacturer follows the coding standard. If "220J" were thought of as 220pF while actually it is 22pF, of course the effect is unexpectedly negative.
Also, if voltage rating is important (as suggested by Ian), not all specify this voltage rating on the body
I think I need to build the cap by myself with copper foils in 5 square cm with 100gsm paper in between.
I have a question that most of the comp caps are available in 100VDC range so how much ACV can be applied on the cap? 1.414 times multiplied?