I wish there was a better way to label them - here is from memory
CTA template (stands for Call To Action because it has tons of widgets...), top to bottom
widget (full width)
Content Area, Side Widget (50/50)
widget(full width)
widget(1/3) widget(2/3) widget(3/3)
Simplified template, top to bottom
Content Area, Side Widget (50/50)
widget(full width)
widget(1/3) widget(2/3) widget(3/3)
Basic:
Content Area, Side Widget