The way to label Dior, Elured, Elurin, Elwing and Earendil, as well as Elrond and Elros is as Peredhil. They were half-elven, and in a sense, perhaps, half-elven humans, and pending some pronouncement of fate by Manwe to the contrary, they were bound by the fate of mortality within the World.
Presumably, they were immune to sickness and common decay, and would be exceptionally long-lived and vigorous to the end. Dior might have lived a thousand years, conceivably, seeing as Elros lasted 500. But the presence of mortal blood (in the non-genetic sense) would mean that their spirits were not bound to this World and could not sustain the corpus indefinitely from the ravages of Time, hence age and death, and the departure of that spirit from the Circles of the World, after a period of waiting in the Halls of Mandos.
For the first three listed above, the question of a choice from Manwe never happened, and sadly, there was no such chance. Even Dior had a short life by the measure of Men. So, we can really never know. So, Dior & Nimloth was thus a pairing of Peredhil and Elf.
For the others, who had a choice, they still remained Peredhil, and could choose, and in three cases, chose to have the life and fate of the Firstborn.
Arguably, Arwen and Aragorn was technically not a pairing of Elf and Man. Aragorn's non-human ancestry was so remote as to be meaningless, but Arwen (and her brothers) were still half-elven. But for all intents and purposes she was a Elf when they married. Her human ancestry was only 3/16, and she had lived nearly three thousand years, already, as a Quendi.
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The hoes unrecked in the fields were flung, __ and fallen ladders in the long grass lay __ of the lush orchards; every tree there turned __ its tangled head and eyed them secretly, __ and the ears listened of the nodding grasses; __ though noontide glowed on land and leaf, __ their limbs were chilled.
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