Help in identifying Texture Map Types

[descatal]

Hi, I extracted these textures from one of my character in the game I am trying to mod.

1.png

2.png

3.png

After experimenting with these textures, I am quite sure that texture 2 and 3 are responsible for some light reflection / shininess of my character in game.
However, I am not sure about the Texture type of file 2 and 3, and the ways to generate them if I wanted to change my color Texture Map.

From what I had gathered from google searches, these could be Ambient Occlusion Map or Specular Maps, but I am not too sure since they don't have the transparency found in Texture 2 and 3.

Please let me know if you need more info, I will gladly provide.
Any help is appreciated, thanks in advance.

[DJ Normality]

3rd is your Diffuse/Color.. 2nd is Spec/Reflection. 1st is your ambient occlusion