[kalleboo]

Messaging platforms are very regional. From your mention of Venmo (which is US-only) I assume you're American. WhatsApp has it's popularity outside of the US.

I've not once in my life had someone ask for an iMessage, and Venmo I've only heard about online. The last time I sent an SMS was probably a decade ago.

Currently I live in LINE-land. 90% of my communication is on LINE. Among friends abroad, everyone has Facebook messenger but it's nobody's preferred method, rather a fallback. WhatsApp is popular among friends in Europe (Sweden/Spain). Don't know anyone who's mentioned Telegram/Signal.