Plate armor in a post-apocalyptic setting: opinions?

Hey everyone. Thanks for taking the time to humor my nonsense. I wanted to share some designs I've made for The various types of plate armor that are present in my post-apocalyptic setting.

  1. Plate carrier: This armor is based off of Indian four mirror armor. And is in universe referred to as a plate carrier. It consists of between 2 and 4 armor plates of either salvaged or forged armor steel riveted to a set of straps for hanging from the shoulders.

  2. Munition plate: This armor is based off of 15th and 16th century. 3/4 munition armor. And is simply a set of mass-produced armor consisting primarily of flauds a curiass often complimented with knee guards and a fragmentation helmet.

3.penta-plate: not necessarily a one-to-one copy of any real world design. This armor consists 5 circular plates bound together with braided wire and attached to a harness. Usually worn underneath a tartan like body wrap. Often used by tribals.

I was hoping to get opinions on the overall design and hypothetical practicality. The closest setting I could compare this one to is fallout where firearms are relatively common and directed energy weapons exist as well.