Spoiler warning: this article covers events from the Solo Leveling manhwa through Chapter 179.
Sung Jinwoo’s shadow army makes more sense when you stop treating every summon as a stronger version of the same unit. Igris is an elite duelist and disciplined commander; Tusk provides magical artillery; Kaisel handles air transport; Tank breaks formations through brute force; Iron pulls enemy attention to the front line; Jima can scale up for giant opponents; Greed adds another S-Rank-derived elite fighter; Beru mixes speed, flight, and support; Bellion sits at the top of the command structure; and Kamish, despite surviving as a shadow only briefly, gives Jinwoo valuable intelligence before fading away.
Those are not official job classes printed beside their names. They are practical roles based on the abilities each shadow retains, the situations Jinwoo uses them in, and the hierarchy that develops as he fully grows into the Shadow Monarch.
How the list works: this is not a power ranking. The point is to pick ten shadows that solve different problems and can justify their place through concrete events in the manhwa.