I mostly used Telegram which is fast track to get updates on time and let know about ongoing progress and what is happening there. They have some interesting plans in the pipeline and overall progress of this project is still looking much healthy.
Nevertheless, Telegram is so bad when you need to trace back to find what you need.
The Telegram groups only are helpful in case of instant supports.
In contrast, you can not create a group in Telegram, I meant sub-groups in one group of one project.
It's so annoying to create multiple groups for different purposes for only one project.
In the aspect of sub-groups/ sub-channels managements, Discord is better option than Telegram.