By going through the list of Destroyed planets on Wookieepedia, and finding the planets that were destroyed in canon, I found two planets missing of your current list.
Anaxes was destroyed by a cataclysmic event after the end of the Clone Wars.
Fort Anaxes was a remote military base on the planet Anaxes during the Clone Wars. After war's end, a cataclysmic event obliterated the planet, though miraculously, Fort Anaxes remained intact.
Fort Anaxes - Star Wars Databank
The planet made it's first appearance in "The Clone Wars: Bad Batch" part of the Lost Missions series after the Clone Wars TV show was cancelled.
The B'ankora homeworld, introduced for the first time (and destroyed) in the prequel novel to Rogue One, Catalyst. The homeworld is unnamed and mentioned only because Krennic sets up his scientists in the B'ankora refuge on Coruscant. Where the details are given that the B'ankora homeworld was destroyed by a cataclysmic collision with meteor, leading to the B'ankora seeking refuge on Coruscant.
I don't currently have the text to provide a quote but have read the book and can confirm the wiki's accuracy in this case.
Previously known planets to be destroyed are Alderaan, and the 5 planets of the Hosnian system plus their host star.