I like Gmail style/design of emoticons/emojis:
How can I save them as PNG/JPEG to be imported on other applications like Slack? Slack allows importing emojis as PNG/JPEG files.
Ideally, is there any place where I can download them all as an archive/ZIP file?
These are most likely to be updated soon because they are outdated. The latest emoji icon pack was released by Google as part of Android 9.0 Pie in August 2018 and it can be found and downloaded at: https://emojipedia.org/google/android-9.0/
The design you are looking for is an old Android 7.1 emoji pack released on October 2016: https://emojipedia.org/google/android-7.1/
