It's probably more appropriate to say at this point it is not confirmed if any of those brands repackage their product from the same OEM manufacturer as that BMW buys their coolant sensor from, but my guess is none of them use the same exact sensor. I buy from ECS Tuning often, but they don't offer the exact oem equivalent in this case. These 3 options are the exact OEM equivalent:
Option 1
Option 2
Option 3
I bought one of these just the other week and it arrived in completely unmarked plastic packaging with no distinguishable markings on the sensor. This is one of the rare instances where the exact OEM part is available, but doesn't appear to have a known consumer brand name to add to the list.