Crystalline biological enhancer "Non-lineage Undead"

On the Proficient and Achievement levels of the Crystaline Biological it specifies that the Target must be a “non-lineage Undead”.

I’m curious what exactly that means? I’ve never seen or heard of undead from animals or what have you, only ‘people’/lineage shaped zed.

What is a ‘lineage undead’ vs ‘non-lineage undead’? Does it have to do with last walks? Do I need to hunt for the one deer shaped zombie in the wastes to use the item?

Appreciate any clarification.

Full dead are Lineage Undead, Zed are non-Lineage Undead.


Jawsome, thank you