[aDfbrtVt]

Add the following lines to your sway config. It works for me when using Waybar.

exec_always --no-startup-id blueman-applet

exec_always --no-startup-id nm-applet --indicator

[NoGravitas]

Ah, blueman wasn't in my distro's repositories for the longest time, which led me to believe it was unmaintained. Apparently it was incompatible for a while, but that's now been fixed.