Heroes loosely arranged by AoE spells, Melee/Ranged, Str/Agi/Int.
On the Int side, single target control, AoE control, Mid heroes, Anti Push, and Carries.
On the Str side, Control and support on top, Carries on bottom. Heroes in middle have both carry/support and AoE.
This helps pick in current meta by choosing cores/carries and AoE, which are usually in the middle.