Problem with majorify of those "decentralized exchanges" is that they are not really decentralized. Good example of that is Pancakeswap that is based on highly centrazlied BSC so how decentrazlied it can be in the end? In the same time, truly decentralized Bisq has only ~$100k daily volume so it makes it very costly to buy/sell any bigger amount of bitcoin.
I can not gree more, those exchanges like are smart contract exchanges are a bit centralized. They have a coin, the coin has a blockchain that th tokens are built on. You can not exchange more than the main coin and its tokens. Just like BNB and BUSD, they are very centralized and owned by Binance, their decentralized exchange is not completely decentralized.
Op just tried to vary CEX with another term called "Transparancy Exchange", but couldn't get rid of what people are most concerned about from it like KYC, 3rd party-custody wallet, etc. "Transparency" (in my sense it's loading trade logs) in this case is actually not an unneeded feature in normal trading, in fact I don't know anyone who needs this.
I hope OP can post about what he means as transparent exchanges, but likely it is just also a centralized exchange just like you said. Exchanges would fall either under decentralized, and if not fall under decentralized, it is a centralized exchange.