Advice on my pink horrors and blood letters?

[Xaric]

the way i assembled them that they will not rank or file any other way so how can i find a way to lable them without ruining the artwork i was thinking to put numbers under the base but anyone else got idea's?

[lattd]

A number on the lip at the back of the base would also work, had the same problem with my wood elves.

[War Painter]

You could also paint on indicaitors you can easily recognize. Scars, colored eyes, freckles or spots. Its going to require memorization though. Its up to you.