Thunderbolt allows daisy-chaining of up to six Thunderbolt devices on one port - if the devices have daisy-chaining ports. That was the original Thunderbolt topology - whereas USB never supported daisy-chaining and always relied on hubs.
Recently it has become possible to
get Thunderbolt hubs (like the OWC one), probably in part because of some of the work done on the USB4 and Thunderbolt 4 standards.
The OWC hubs have one upstream Thunderbolt port and three downstream ones - they split the chain into thtee. The downstream ports can have up to five Thunderbolt devices attached (total, between all three). To get to five, you would use daisy-chaining of some of the downstream devices.