It does look like there are 2 types listed, probably both wrong 🙁 There is a straight one: C00094715 and a bent one: C00088399. Neither of these look like they have an NTC. If it has the Hotpoint type tub I would try the late Hotpoint heater, C00112578.
The C00088399 has a thermistor according to the Connect picture, I would have taken the heater out but I don’t like re fitting old ones and she wanted to use the machine.
Still happening, Ordered a heater for a WD12XUK (s/n 41222836) as listed from Masterpart, pt no 064556 trouble is it has no thermistor. Again any help appreciated.