The decentralized exchanges tlare the ones that you can go for. I do not know how the fee is, but you can try the ones like Pancakeswap which is BEP20 and compare it with ERC20 exchange like dYdX.
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I didn't knew that Pancakeswap has options for Future trading too, I just get to know about it now by reading your post. (Thanks for that). And if we can do future trades on PS then why going for DYDX, DYDX is a new exchange while Pankcakeswap is older and most trustable too. So, if i have to chose as in OP's place then i will go for PS.
I do agree with your points, that many platform not asking for KYC at start might ask for KYC after sometime or when the trading volume will begin to increase. OKX would be a better option too. Houbi is also on the list but now i will suggest OP to not trade in Houbi because it has some red flags. You can read more in the following threads:
The waves of problems on Binance have not subsided, as it started with Huobi ...
Unexpected news:
-Huobi top executives and TRON developers arrested in China.
-Binance has started a massive sell-off of USDT.
-USDT has been in a mild deprivation for a week now.
-Huobi's balance dropped from $700 to $90 million in a month. -The Merkle Huobi tree (a balance sheet publication introduced after the
Credit to Tytanowy Janusz for posting this on our local board.If you hold any funds on Huobi, you may want to consider withdrawing asap.
As reported by Adam Cochran on his twitter:
https://twitter.com/adamscochran/status/1687959096316542976, looks like Huobi might only hold a fraction of the reserves declared in the "Merkle Tree Audit", which they stopped updating last month.
Other than that if you wanted a list you should visit this website for better options.
https://www.techopedia.com/cryptocurrency/best-decentralized-exchanges