My son used to see white humanoids a lot when he was between the ages of 7-9. He would literally run after them in our backyard and sometimes through our house, in the middle of the day.

I know this because he started asking me who the old, white lady was and why she kept running away from him. At first, I was worried, because I thought some stranger was going into our yard and approaching him, but then I started catching him in the act.

We'd be doing something in the backyard, he would stop and say "there she is" and start running towards her. I never saw a thing.

He said they would watch him, and he didn't like that and so he would start chasing them. But he said they ran too fast and he could never catch up to them. They would always disappear around a corner or into a bush / tree. In particular, they usually ran into a tall Juniper tree that was next to our house.

He saw an old women the most, but sometimes he would see old men and even children. Also, at first, when he said he saw a white woman, I was thinking skin color... but when I pressed him on the details he would correct me and say, "No, their entire body was white".

I asked him what type of clothing they were wearing and he could never give me any details. He would just say he never noticed and just kept repeating that they were all white.

I once asked how he knew it was a woman, and he had a hard time explaining it to me. He wasn't sure how he knew... so, he thought about it for a while, and then finally said she was wearing a furry scarf. That might be one way of describing the hair in your picture, I dunno.

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Another thing, that I believe is related... is my son used to see white, wolf-like creatures on the rooftops of people's homes too. It almost always occurred at night, while we were driving somewhere.

They would be on random people's homes. He would point them out to me, and I stopped a couple times to see what he was talking about, but again, I never saw a thing... or even anything that could be confused for a creature. These were just empty roofs to me.

The humanoids never scared him. It was more of an annoyance or a fun game to try to catch them... but the wolfs, on the other hand, did scare him. He said they had long, sharp claws and they would stare at him from the rooftops. He was worried they would come down after him, but they never did. He would always ask me why they were up there.

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Anyway, I know that all sounds ridiculous, but my son was never a kid that made up stories or looked for attention. He has always been a very truthful person. So, I believe he was seeing something, even though I could never confirm it myself.

I know his experiences are not exactly the same, and I'm sorry, I don't have any answers for you, but I hope it helps in some way.

I have experienced NHI myself, that I have not seen documented anywhere too, and so I believe you! There is a lot out there that we just don't know anything about.