What is the best business model for freelance marketplace?

Hi, I'm thinking about curated freelancer marketplace in my country, something like https://www.unicornfactory.nz/

But I'm wondering what is the best approach here in terms of business model? How this kind of marketplace should be monetized?

On one hand we can get %fee of any transaction, but I don't like this model - we need to hide freelancer details etc.

Is there a better way to do this?

I need to add that it will be curated and niche marketplace, so amount of freelancers won't be huge here.