So we begin ranking the Precures with the first season. Futari wa Precure and the 2nd season Max Heart.

Ranking cure black and white is ridiculously easy as all the good things associated with the franchise stems from them and the creators know it.
Even 15 years in they still provide advice and experience for the other cures to learn from, they are the default standard all Precures look up to.
As Nagisa and Honoka they are the perfect Lovely Angels trope; the Lovely Angels trope works like this, two girls, one tomboyish, one feminine and they both kick ass but what makes them work so well is that their personalities work off each other naturally.
Nagisa is athletic, cheerful and competitive but shows vulnerability when presented with the fantastic scenario of being a magical girl.
Honoka is smart, gentle and reserved but can be serious and willing to go that extra mile to help people.
United the two cures are unbeatable and only when their hearts unite can they rid the world of darkness.
Misumi Nagisa - Cure Black - 9.7/10
Yukishiro Honoka - Cure White - 9.3/10
I can't really say the same about Shiny Luminous; she's probably the least combat capable of the franchise despite god level powers; Hikari herself isn't much better, being a blank slate that can barely muster a proper personality; while she is important to the overall plot the series wouldn't be weakened if she was left out a sentiment shared by the creators as she doesn't always appear with Nagisa and Honoka.
Kujou Hikari - Shiny Luminous - 4.3/10
Best Dressed Award - Cure White because the default Precure dress design is based more on Cure White than Cure Black.