And indeed I have encountered all these responses in tutorials--but not necessarily all of them, nor necessarily in that order. There's an interesting critical article on them here.
I'm struck by the potency of the stage model, and the apparent desire of end-of-life and bereavement counsellors to latch onto it despite its lack of evidence. Going back to an earlier discussion of Berger and Luckmann's externalisation/reification/internalisation process, the K-R model seems to have been reified and then internalised, despite the externalisation impetus being relatively weak. Interesting!
Kubler-Ross E (1969) On Death and Dying (various editions)
* I don't do "reflection".