Which iOS emojis are currently available across most (all?) modern platforms? I used the "rolling eyes" emoji available in my iOS keyboard in a social media post, but was dismayed to find that it isn't available on my Chrome on windows 7 computer. While I could install fonts/extensions/etc to "fix" the problem on my computer's end, I actually want all my social media audience (such as it is) to enjoy all of my posts.

Is there a list or resource that shows which iOS emoji's are available broadly on windows 7+ and osx with IE, Chrome, and Firefox, and on iOS 5+ and Android 4+?

If not, can we make one here in a single wiki style answer?
You can see a full comparison of most current platforms at https://emojipedia.org
but only as far back as Windows 8.0

For Windows 7: http://classic.getemoji.com