via The Armory:

Carmina lasts at The Armoury, left to right.
Simpson | Narrow width with chiseled toe, narrow throughout forefoot, tight heel, lower instep.
Robert | In between narrow and regular width. Similar to Simpson in the back half of the shoe. Classic rounded toe, higher toe box with more room in the forefoot.
Uetam | Regular width loafer last. Rounded toe with a slighly lower instep.
Inca | In between regular and wide width. Tapered almond toe, more room at balls of feet with regular instep.
Rain | Wide width last with a softly chiseled toe. Higher instep, tight heel, and room in the toe box. Ideal for bigger feet and wide widths.