Is there a name for this style and/or "subject matter" of art?

The subject matter has a dreamlike hybridity, as it always seems to conflate two visually or associatively related but causally illogical or impossible, unlikely, and mostly absurd, objects. In that sense it can be described as dream art or surrealism, although both are quite broad terms.

The cartoon-like art style directly reminds me of that of the animated TV series Archer, which art style is described as "mid-century comic art", although in both cases the shading is a more modern, digital-age, toon shading.

I would classify these as surrealist graphic icons, maybe? There are definitely simplified elements of surrealism here. If you find this style interesting though, and your goal is to immerse yourself in similar images, try your hand at these searches: Simple iconography, Simple surrealism, Line art illustrations, Vintage illustrations, Vintage surrealism, Vintage instructional art...

I say instructional, because there is quite a bit of interesting and simple art that has been produced in the style of small, easily digestible cards and pages. You might like what you find.

Then again, I could be totally off base! Either way, happy art hunting!

I agree, "Clip Art" or "Graphic Arts" would seem an appropriate answer.

Also, they might be described as "icons" or "avatars" in another usage. Again, the answer to this question is perhaps largely a factor of where the clips are used, what they are being used for and how they are included.

There is a lovely "quirky" humorous flavour to them. They could be used in a "satirical" way, or perhaps just as a "quirky" or even "geeky" personal avatar by different people. I actually like them.