I’ve been enjoying Push to Kindle on my iPhone. I use it a lot with Apple News+ - it’s really nice to send long-form articles to the Kindle.
But Push to Kindle is really hit and miss with Apple News articles - I’d say about 50/50 chance of it working.
I’m happy to compile a list of example articles that don’t work, but before putting in the effort, would like to know if this is useful to you. And anything you can say about what info you’d like to have in such issue reports would help.