Help Identifying Retaining Block Wall Manufacturer

Hi. I am looking to raise the overall height of a block retaining wall that was built by prior owners. However, I have not able to match the block. I have visited a few stone distributors to see if they could help, but they weren’t able to figure out who the manufacturer of the block is. There are multiple sizes of stone. Possibly looks like some were cut in length as needed to make the fit.

3x16
3x6
6x10
6x6
6x12
6x16
3x10
3x4
6x4