About Google Emojis
Google emoji images are used on most Android devices, Gmail Web Interface, Google Hangouts, and ChromeOS. These are provided as part of the Noto Emoji project. These images are also used for Slack on non-Apple platforms including Windows, Linux, and Android.
Note: Samsung devices use distinct emoji images. WhatsApp, Facebook and Twitter use their own emoji images on Android, while Signal and Telegram for Android use Apple emoji images.
New emojis are available as part of Android 10 rolling out from September 3, 2019.