Trends ebb and flow on the Internet with the regularity of the tides, and they're usually here and gone before many folks even realize what they are. However, there's one that's been around for a while now, yet many may not know it is actually "a thing."
I'm sure you've seen it even if you didn't know what to call it. The actual term for it is "knolling." I know you're wracking your brain trying to think what you've seen could possibly fit that term, so I'll explain.
Knolling, also called "flat lay," is photographing carefully organized objects against a solid background. It comes from way back in 1987.
Andrew Kromelow was a janitor working for furniture maker Frank Gehry. He liked organizing his tools and taking pictures. He called it "knolling" after the super clean Knoll furniture the company was making.