unfortunately the file names vary from model to model (including the suffixes) for example one hair diffuse texture (with the alpha channel within) might simply be called "hair.png" while another might be called "Hair_diffuse.png" or "Hair_d.png"
nooby here seeking some help from you scripting pros! :)
I use the program "XNALara" to make my scenes and then export them as .OBJs to Octane render, the program applies all of the diffuse textures just fine, but it seems that i need to manually apply the alpha images.