I don't know about the rest of it, but #4 is most definitely moss. I used to go "mossin" in Appalachia, and that is the stuff you scrape off the rock for sure. Only certain parts of that in your photo are worth taking. It's hard work but worth it for the right moss.

If it qualifies, I like your #3 photo the best. Great angle, lovely color.

I do not have many tree photos, but I found this one to post today.
https://steemit.com/treetuesday/@fitinfun/phen-district-lonely-tree-on-the-main-road

Thank you so much for doing this each week :)