Photo 1
Pinocchio - His nose isn't supposed to be yellow. Look at the difference in font between that pin and the Dumbo one next to it? See how clear the Dumbo one is, and smushed the Pinocchio one is? Verdict - Fake
Dumbo - I think this one is real. I have this pin, and everything matches it up, including the alignment of the Mickey waffle.
Pear - Look at the box that says Hidden Mickey pin, it is also supposed to look more like the one on the Dumbo pin. The Mickey Waffle isn't the right configuration. On the front it looks like it may be a little dippy and the silver Mickey not quite right, but it's a little unclear. Verdict - Fake
Acorn - Look at the spikes on the starburst logo. Less than 90°. The Mickey Icon on the front looks blobby, but again a little unclear. Verdict - Fake
Photo 2
Sebastian Cancer - There are supposed to be nubs on both sides of the post. Verdict - Fake
Koda Alphabet - Ditto, missing nubs. Coloring is very wrong. Less than 90°. Verdict - Fake
Grapes Chaser - This one is hard to tell. I am leaning toward fake because there are inconsistencies in the spacing of the Mickey waffle pattern and I think the text is supposed to look clearer, like the Dumbo from Photo 1.
Hop Lo Mushroom - I am really not sure about this one.
Pink Lanyard - The front looks looks pretty underfilled, and dippy. The starburst spikes are less than 90°. Verdict - Fake
The other photos get into pins, I either don't own or are less familiar with.
Photo 3
Cupcakes - These look pretty good to me
Puffle - There were a lot of fake Puffles, the ridge around the edge is not a good sign
Chip Tsum Tsum - It looks like the enamel is underfilled, and it has that shiny gleen a lot of fakes have
Photo 4
Up - I think I own this pin, but not sure where it is to check
Toy Story Land Alien - This is a pin from Shanghai Disneyland. If it were authentic, it would have more value as a person-to-person trade than to put on a CM lanyard. And while it is sometimes possible to find a Japanese guest putting cheap Tokyo pins on lanyards, it is a unicorn to find someone putting real Shanghai pins on a lanyard
Nemo & Pooh Cutie - I'm not sure about these, and would want to see and feel them. These are from booster packs that could have been put on lanyards, but there are fakes of these out there too.