If I have NOIDS, they are simply labeled that way. When one blooms, I will then do what I do with my own seedlings or (more recent) cuttings obtained from someone, perhaps in trade. One advantage I have is that I have pictures of every single variety's flower I have ever purchased or obtained in trade (several years back). All my NOIDS are those plants or rooted cuttings of those plants. It is quite easy to properly label them when they bloom. For example, Madame Gallibert was obtained from Hetty. If I lost the label on that plant and had it labeled "NOID", when it bloomed, I would have that flower in my plumeria folder. The plant could then be labeled.
A very close friend traded 24 plumeria cuttings for some orchids. She had nine separate plants and though she thought they were all different varieties, she knew not a single name. Two of the nine were actually duplicates, but because her plumeria were different sizes when she took the cuttings, she thought they were all different. Anyway, she used a permanent marker to put the numbers 1-9 on all the cuttings. That's all I had to go on so I made up labels that corresponded to her numbering system. When they bloom, I can then photograph the flower and put a name on the plant. For example, when #6 bloomed, it then became 'MM's Pizazz' (her initials). #6 was thus "retired".
With my seedlings, they are labeled with lettering. I have "A" through "H" seedlings. Again, when one blooms, I will name it and retire that letter.
I hope this makes some sense. It seems to be easier to do than to tell one what I do and why.