Lutron Smart Bridge Pro

More discussion here if you’re interested:

In order for ST to work directly with Lutron, an additional antenna would be required. Not impossible for the V2 hub, but there haven’t been any planned integrations announced, with Lutron or with HomeKit.

It looks like a ST / HomeKit integration might allow for a way to fold in Caseta devices, at least, so maybe some day.

Meanwhile, there are some ST competitors that do have direct Caseta integration, so if that’s a top priority for you, you could look at those.