OK 4 Wire,
Riga was a Kiev class helicopter/Forger carrier. I know, I went to 'harass' her in 1988 as she exited the Black Sea on the way to the Northern Banner Fleet in Murmansk. She was bought by the Indian Navy and renamed INS Vikramaditya in 2013.
The Liaoning was indeed known as the Varyag, originally named the 'Riga', a Kuzntesov class carrier, a totally different beast to the Baku. Commissioned in 1988 and sold to the Mainland in 1998 she entered service in 2012.