I am just hunting for a rear sensor the same as OE factory fit. Rather than pay over £100 for an OE, I am trying to find the actual manufacturer of the part..?? So this is not the same as the factory item then..??
Had a look at mine and it has what I call cut-off's, so maybe the 2nd in your list could be the right type Mr. C. I would have to see them side by side to be certain..!!
As the car is up for sale now, I think Autoshield will replace it with one from Eurospares for speed, but for future reference I have asked them to compare the two when they take the old one off..!!