If anyone wants to build a bunch of these, and needs at least 10 of the ATX connectors, I have 50 of the "wrong type" which I sourced before finding out the PCBs needed to be adjusted for them. I'm told the PCB design on GitHub currently has spacing for both types of connectors in the same design, but I haven't verified this myself (I ordered the old style).
The initial project had the ATX holes in a specific spacing, and quoted a particular ATX connector part. I was assisted in obtaining more affordable parts, which included an ATX connector that had spacing which wasn't the same as the original design (of which I had pre-assembled PCBs coming for). So instead of re-ordering a batch of PCBs, I instead ordered different connectors to fit the PCBs I already had in production with JLCPCB.
So I have a box full of the ATX connectors I cannot use. If anyone wants at least 10, I'd be happy to drop some in the mail to you (US only) for $8 USD including shipping costs. If anyone wants all 50, I'll sell at my cost plus shipping. DM me.