I think Dynalist would tick all the boxes for you apart from in-line images. you can add images but at the moment you need to hover over the link to view them

I think Dynalist would tick all the boxes for you apart from in-line images. you can add images but at the moment you need to hover over the link to view them unfortunately. (although I think somebody made a browser extension that makes the images load in view, but then that won't work on the mobile app version. their web app is fairly useable in a mobile browser though) I just wrote a spiel about Dynalist in another comment if you want to word search for that