The revivals were either institutionally important or they had major success. The boogie-woogie revival is marginal, I guess but it did put half a dozen songs on the charts throughout the 70s and 80s.
The ragtime revival was important because it officially put it in the concert hall and consequently remembered as concert music instead of dance music, resulting in people mostly being unsure how exactly it was danced to. But goshdarn it, it is now part of orchestral repertoire and you will sit down and enjoy it.
Skiffle revival is important if you have any shining for the Beatles. It's how they formed up. They did depart from it quickly but without it, no Beatles.
Soul revival (and neo-soul) is perhaps the most successful, producing many charting hits throughout the 90s and early 00s.
Spacesynth and its associated genres like synthwave and neo-italo had some prominence in the 2010s, mostly prominent in Europe. Which makes sense because that was the styles it was drawing inspiration from.