I only recently learned that knowledge, so I’ve only started doing this - hence the “personally, I haven’t seen” comment. But I probably just haven’t read enough of their articles to get a feel for their slants if they have any.

So far though, I will say, both AP and Reuters are a hell of a lot more neutral and matter-of-fact in presenting news than any news outlet in recent years.

What would be considered slant?
a guide would be good here for defining slant so everyone can go through a checklist and say, yeah that article or news agency's articles are slanted