Here's the capacitor shootout from awhile ago that I use quite often:
https://www.humblehomemadehifi.com/Cap.html
Great info and a really good read...
We want more of this!
https://youtu.be/2IlW-HX_m_4
Wonderful initiative on capacitors!
Other than listening live, theres only a few ways to find out how capacitors work. A great starting point, no objective statements, just samples for people to listen to.
Almost 60 other capacitors in the lineup as stated on the website