Is there any list of icons available that I can use in a expression like I use home in this one?
folium.Marker(location=[0,20], icon=folium.Icon(color='lightgray', icon='home', prefix='fa')).add_to(m)
Answer
You can find a full list here:
https://fontawesome.com/icons?d=gallery
use with: prefix='fa'
or the glyphicon icons of Bootstrap that are built-in and standard, thus without prefix needed. https://getbootstrap.com/docs/3.3/components/