Chargebee + Merchant of Record Payment Platform?

I like Chargebee's platform, seems powerful, could scale with your business, supports a model where people subscribe themselves, or through a more direct sales effort where you could process orders through PO, CCPQ, etc required by sales organizations as well. Starting out though, based on some of my learnings from another post, it seems like I'd want to get a MOR (Merchant of Record) payment platform to really simplify things significantly.

I know that Paddle, which is it's own platform, supports this. However it looks like you have to be sort of all in with Paddle, and it does seem to have limitations for some of the other functions I mentioned above. Is anyone aware of other payment providers that provides MOR services, tax collection, etc that Paddle does, that integrates with Chargebee?

I see Chargebee has a list of Payment Gateways here: https://www.chargebee.com/payment-gateways/

Is anyone using any of these as MoR to support Paddle like functionality, but through the Chargebee platform?