Some people don't know this so the confusion is of course understandable. Previous GOLOS split into two, one is on Golos.Id ( GLS) and another is Golos.Io ( GOLOS). People tend to mix those because of the name. GLS is in fact the original.
Golos Blockchain (GLS) - a few exchanges are available and they are all easy to use.
GLS is GOLOS.ID
https://www.coingecko.com/en/coins/golos-blockchain
EXCHANGES
https://golos.id/exchanges
HIVE-ENGINE
https://hive-engine.com/?p=market&t=SWAP.GOLOS
RUDEX
https://market.rudex.org/#/market/RUDEX.GOLOS_BTS
https://wallet.bitshares.org/#/market/RUDEX.GOLOS_BTS
Unlike GLS , GOLOS value is much lower and I am not sure which exchange they use. How to exchange https://golos.io please ask in their Telegram https://tlg.fyi/golos_eng.