Ground news was started by the right wing to shift the Overton window rightward. It's funded by Joe Ricketts, a conspicuous conservative super-PAC donor and gets its bias scores from AllSides, which grew out of Republican organizations.
Ideal service should be local small model run as a self hosted federated instance, piped data to your terminal of choice. The opinion layer could be pulled from federated comments, the analysis layer from sources based on some sort of trust rating. Variance from unambiguous data for instance. RSS friendly maybe?
If I have nothing better to do later I will try to start writing it maybe.
Receiving investments from people affiliated with the GOP doesn’t seem itself that bad, unless you are so partisan that you yourself are infected with exactly the thing the site aims to combat. Left wing bias is also toxic in certain media sources and should be avoided unless you don’t actually care about bias and are more interested in an agenda.