WPS Office Free & Premium. Also cross platform Windows, Linux and Mac
It looks the most like MS Office 2016 if you like MS Office. They have a free versions with a few limits and of course annoying ads! The premium versions are very reasonable in price $29 per year 3 computers & 6 mobile devices. (LOL I wonder if they know in the real world people don't work off their phones!)

I can't give you files to download here it's not allowed per their EULA agreement.
(Yes some of us read those)
Notice the ad in the bottom right corner - that is on the screen not locked to the writer.


Website https://www.wps.com