There are sites that work like escrow (I've heard of bitrated, never tried it out yet), but for now I would still trust more the established escrows from this forum.
Can you share sites that are running as Escrow?
For escrow we need companies that are really corporate identity. I mean, companies need to do this job legally on a legal ground. People are more comfortable when the company's identity and employees are known.
As I wrote, I heard of Bitrated, but I didn't use it.
There are some screenshots here
https://www.bitrated.com/faqI know that many people trade MRAI using this platform and I did a quick check on it. I don't know how good or reputable it is and I am certainly not affiliated with them.
From here you'll have to do your own research...