Guru Scott Wurcer investigated caps for LN stuff. I had some correspondence with him on the subject and I think he put some of this in his Linear Audio articles on condensor microphone amps.Although there have been a lot of advances in capacitors, some of the silver mica caps are definitely worth looking into.
He found Polystyrenes microphonic and Silver Micas introduced a strange noise. The best small caps were NPO/CGO ceramics. If the voltage / values / size fit, use them.
Tantalums and some of the uber Electrolytics also introduce noise at a very low level. If LN is your thing, use cheapo Aluminium Electrolytics and bias them properly.