The other major interpretation is the Many Worlds Hypothesis, which basically states that everything that can possibly happen, happens, in a new and separate universe. As crazy as that sounds it is something believed by many in the field.
If you had never heard the word "unfalsifiable", this is the idea that might make you think of it.
Those are not the only schools. There is a modified Copenhagen Interpetation which does not require consciousness or even observers, and there is quantum coherence and decoherence as well. There is also a modified version of Many Worlds which does not regard the uncountable trajectories of the Feynman Path Integral as literal configurations in an infinite number of universes. Most physicists these days are more likely to belong in the last two categories, and not to take the literalism of the original Copenhagen School very seriously. I’m not in the life any more, but at the time I left academia (and physics) in the late 1980’s I did not know any practitioners — even among theorists — who took the infinite number of universes interpretation all that seriously. Feynman himself did not.