Most of my guitar and bass amps will do 4, 8, and 16Ohm....seems like Marshall likes 8, and 16 mostly....there are others too, I’m sure. I do weigh that spec when shopping....I like to see that the output transformer has a 4Ohm tap. Now that I think of it, I have a Crate Vintage Club 20 that ONLY does 16Ohms. I’d love to find a replacement transformer that would allow for choices. But it’s a good little amp as it is.
Usually, the amps that will go to a 2Ohm load are solid state, high powered PA type amps. I have a couple of those kicking around here too.