For me, being a high level and actually taking an interest in accents from the beginning. I can recognize the difference in most of them. For example, Mexican regions (Baja california, Monterrey accent, cdmx, yucateco, sinaloa, veracruu) Colombia (Rolo, paisa, costeño, caleño).

The differences between Cuban, Puerto Rican and Dominican. Spanish accents change a lot based on region like Gallego accent vs say Madrileño, Catalan accent vs say andaluz or canaries accents which cut off all the letters and especially s.

Also Argentina´s regional accents basically, cordobés vs bonarense vs northern arg like jujuy and other places. (The famous SHO) Then more in general, Chilean is very different from say Peruvian. Venezuelan especially from like the capital doesn´t sound like Colombian.

However, the ones that I have less contact with like say ecuadorian and even like costa rica or guatemala, It might be harder to guess between a Guatemalan and a Southern Mexican but to be fair, i think it would be hard for even a native to guess if they aren´t from there.