We're nerds, friendly quibbling is part of who we are.
Paradox bought the World of Darkness IPs in 2015. Onyx Path started working on WW-licensed stuff in 2012, crowdfunding their first V20 book in March 2012. They bought Scion and Trinity at the same time they negotiated their WoD and Exalted contracts.
Fun alternate timeline to ponder - at GenCon 2014, Onyx Path announced the development of Vampire: The Masquerade 4th Edition under Eddy Webb. (OP didn't consider 20th Anniversary a "true" edition.) That edition was cancelled after Paradox bought the IP and announced their own in-house VtM edition. They decided to count 20th Anniversary as fourth, hence Fifth Edition.