Great tip from Sindre. Apparently Mac OS settings allow one to map the fn key to the emoji picker. I use the emoji picker many times a day. This remap must be a fantastic time saver.
Control + Command + Space is the default shortcut for those curious.
I like Slack-style emoji picker though, where I can type
: followed by the emoji name. That displays a horizontal list to choose from, vs Mac fn key popup display. It’s considerably faster, but not all apps support that. I know only of Slack, Flock, Telegram and Signal as apps that support it.