Let me just add to your list
* Manaan and the Selkath are canon (Selkath were seen in the clone wars, Manaan was mentioned in a book)
* Korriban or as it's canonically called Moraband was visited by Yoda during the clone wars (The Valley of the Dark Lords and the Sith Academy are also shown)
* Taris is also canon and it is described to be a polluted planet with scattered ruins of ships across the surface (Possibly hinting to Darth Malak's bombardment) (Additionally that black female senator in rogue one who says "If the empire has this type of firepower what choice do we have" represented Taris in the Imperial Senate and the next Senator of Taris died on Honsian Prime when the first order destroyed it)
* Hammer Head Rebel Corvette ships were said to be based off an ancient design (Direct Kotor reference)
* Ossus is Canon (It was a Jedi Planet I do believe and if anyone remembers the Ossus Keeper Robes)
* Telos was mentioned though whether it's Telos IV with the Citadel Station or if it was even bombarded is a mystery to me
Something I do want out of Canon is to first up have a new Kotor RPG based off the original with maybe a few new content like Jedha during it's prime, A Star Map on Lothal, A Jedi Enclave on Takodonna and maybe some characters from the EU that can't be brought into Canon to some degree like Darth Krayt and Talon since there placed in the years AFTER the original trilogy. Also a Kotor DLC for Battlefront would be nice and you can only play as Kotor Characters on the Kotor maps.