Are you using Telegram instead of Slack at work?
Work is still skype for business, plus iMessage between co-workers.
I know few people who do.
Discord has done that for me, but only because all my friend groups are willing to use it. If you just want a messenger that works well, there are a number of good options - that unfortunately don't talk to each other.
What makes telegram a winner for me is that the desktop is a first class citizen, I'm in front of a computer like 18 hours a day - I don't want to have to stop what I'm going and respond on my phone. Yes, perhaps Signal is more secure, and I may try it someday.. but for now.. Telegram has largely solved my 'communications' problem.