I prefer to use Conky to achieve very similar results as Rainmeter. However, I have also run and tested Rainmeter using WINE on Zorin OS and it runs on the Zorin OS desktop pretty much flawlessly.
You can also use Animated Wallpapers on Zorin OS desktop using additional apps Where is Background Plus in 16? - #3 by Storm
Wasn't able to get Rainmeter to show anything but managed to get a couple basic widgets with Conky. It gave me a headache but found Conky Manager (really old and unsupported that I could tell).
It took most of the day to get a somewhat decent widget but I got some good practice on the terminal and learned some about Conky. It's a shame it isn't being developed. I appreciate the tips.