The ones in Spain often market themselves with their Chinese-ness: "Hyper China", "Panda Bazaar", "Maxi Barato (super cheap)", etc. would be some representative names & signage you see outside.

They range in size from small shops to things with huge floor space.

One thing I've found is that they seem to sell very low quality stuff: e.g. on aliexpress you can buy a flashlight which is built out of metal, has usb-c charging, for $10, whereas in the physical shop, you get the plastic one that takes AA batteries for $2. So they're not a replacement for AliExpress, Temu & co.

Most of the ones I'm thinking of are just corner stores - it's not a brand or chain to my knowledge. An example might be Bazar Gran Puerto, El Puerto de Sta Maria, CA, ES.