Brian Earl Spilner said:
SThe prequels have gotten very little love in the Disney era so far, with a prequel planet being shown a whopping one time since 2015. (Mustafar in Rogue One.)
Coruscant is in Rogue One.
Mustafar is allowed to have more than just lava fields
Ren dogs Hux by saying maybe they should use a Clone army in TFA
Luke mentions Darth Sidious in TLJ
Prequel Obi-Wan talks to Rey twice, and so do Qui-Gon, and Luminira Unduli and Anakin Skywalker and Aayla Secura and Adi Gallia, and Mace Windu.
Aurra Sing is referenced in Solo
Bail Organa is in Rogue One
Lando mentions Felucia in Solo
Darth Maul is extensively featured in Clones Wars and Rebels, as well as in Solo
Palpatine repeats a line from Episode III "abilities some would consider unnatural."
Babu Frik has a B1 Battle Droid in his shop
Kylo leads his troops into the base on Crait in TLJ exactly like Anakin does entering the Temple in ROTS
Ghost crew visits Geonosis in Rebels
Sabine mimics Anakin's sand quote in Rebels
Battle droids and droidekas in Rebels