If you want to be ridiculous, Samsung copied waterproofing and wireless charging too. They weren't the first with either. They weren't even first with 'phablet' sized phones, that trend originated in China a couple years before Samsung got on board (and continues today, there are phones sold there that would be well over 8" if they were all screen)
So Samsung copied everything on your list, except maybe OLED. Since Samsung makes OLED screens they might have been the first to use it in a phone, but I'm not sure about that - they might have sold screens to someone else for a low volume botique type model first until they got the volume up enough to use on a Galaxy. I guess we give them the dubious credit for folding the edges of the screen around the phone. Much stupider than the notch, IMHO, since that part of the screen is useless and makes it easier to break. Pretty much everything else Samsung "copied" as well by your logic, since they weren't the first. I imagine Samsung will sell a phone that supports 5G before Apple, and you'll claim Apple "copied" Samsung when they add 5G?
IMHO, making a phone bigger, normal technological progress like LTE/5G, more RAM, more flash, faster CPU, or the addition of minor features like waterproofing, wireless charging, second/third/etc. cameras and so forth aren't things that are really "copied" anyway. The technology already exists, and the idea is already out there - it isn't like when the first waterproof phone came out all the phone designers were like "wow, what a great idea, I never ever would have thought of that if I hadn't seen someone else do it first!" The first phone to support 5G will be kind of a matter of happenstance - it would have to be released after Qualcomm is shipping the chips (assuming Qualcomm is the first to ship 5G chips in volume) be a higher end phone able to absorb the higher cost of that more expensive chip, etc. It isn't an important enough feature in 2018 that I could see an OEM holding the release of a flagship to add 5G. The first generation chips always suck power like nobody's business and run hot anyway.
Even less obvious stuff like that all screen phone that has a pop up selfie camera isn't an original idea. There's been a guy who comments on eetimes.com who's been banging away about that for years now, telling everyone it will be the Next Big Thing. I'm very skeptical, I think an unprotected moving part like that is gonna be trouble - I think the long term failure on it would be unacceptably high. But I guess we'll see if eventually Samsung and Apple "copy" that or not.