1. You are correct. I would not use a “new” photo (i.e., younger than 75 years) of Lincoln unless I have written permission from the owner or publisher to do so. Exception: a photo of a Lincoln bust I take with my own camera.
2. If it is a photo taken from Screenrant.com, then SK’s photo should not be used unless there is written permission from that website to do so.
3. Any photo taken from MMA should not be used unless there is written permission from MMA to do so.

SUMMARY: If an image is not in the public domain, then you need written permission to use that image. It’s as simple as that. And it’s always your responsibility to research and make sure that the image is in the public domain before you use it. That’s why I use Wikipedia and Wikipedia Commons images because they are either in the public domain or Wikipedia tells you exactly how to attribute and use the image with the Creative Commons (CC) license. I also use images from Unsplash, Pexels, and Pixabay since they are all copyright-free and don’t even need any credit or attribution unless you want to do a favor for the image owner.