The organization I work for does something similar and positively evaluated GiveWell in November 2025 (see https://docs.google.com/document/d/1U9H34ui_hvnPOwvsvcZF3VCC... )

Personally, the more I look into GiveWell the more I think it's an amazing way to donate

This is getting downvoted, but it's a salient point nowadays.

Who watches the watchers?

Because if it's no one, then all we're doing is vouching for what could easily be scams set up by who knows who to steer our money to dubious organizations for who knows what purpose.

We shouldn't trust the watchers any more than we should trust, say, Feed the Children. Or Medecins Sans Frontiers. All these organizations should be watched in a comprehensive fashion.