Apparently if you go even further back and apply the same logic, we are all fungi. In fact, we both can synthesize vitamin D from sunlight, although I'm not sure if we do it the same way or use it for the same purpose.
I realize "we are all eukaryotes" doesn't have the same punch...
Plants are also Eukaryotes but Fungi and Animalia have a more recent common ancestor than either has with Plantae.
We and fungi are both Opisthokonts, a distinct subclade of Eukaryotes, but plants are not.
https://en.m.wikipedia.org/wiki/Opisthokont
Apparently if you go even further back and apply the same logic, we are all fungi. In fact, we both can synthesize vitamin D from sunlight, although I'm not sure if we do it the same way or use it for the same purpose.