At this point, nobody sells modules for this, and I doubt many coral chips still sell. The current slot for an ML accelerator at about 10 TOPS is as a peripheral on an SoC. Most serious SoCs have one.

In other words, the reason you didn't find a commercial competitor to these things is that the competitor is (nearly) free.

Here's one vendor: https://www.ti.com/technologies/edge-ai.html