I am new to i3 too so need to be reminded of my keybinds often
The keyboard icon at right hand side of taskbar in EOS i3wm links to a really helpful pop up with this info
I replaced the keybind for the list in the editor with this menu (and moved the full list in editor to F2):
# [keybindings]
bindsym $mod+F1 exec ~/.config/i3/scripts/keyhint.sh
and edited /home/leigh/.config/i3/scripts/keyhint.sh to what I wanted it to show
That’s my solution anyway 