OMG when I first saw this thread I thought it said "Animorphs and the Kardashians" and I nearly had a panic attack.
This is a much saner topic.
Ellimist and Crayak are definitely in the Type III category, insofar as they even use 'energy' in that sense at all. But they definitely operate on galactic scales, so I think that categorization still fits.
Most races don't even come close to that. Humans, Hork-bajir, Taxxons, none of them are even a full Type I. Andalites
might be a Type I, but definitely not a Type II. Races like the Iskoort and the Helmacrons (but, really, who knows with them?) might also at least approach a true Type I.
Hmm. However, the more I think on this, though, the more I have to wonder if this scale can really capture the technological prowess of various Animorphs species (which seems to be the main point of using the scale, correct me if I'm wrong). Take the Arn, which use so little of their sun's energy that they can be almost completely cut off from sunlight down in the Deep. In that sense they're farther down the scale than even humans. Yet, look at what they've managed to do, not with energy technology, but with bio-tech. Obviously they're way more advanced than humans.
On the flip side of that, take the Yeerks. They were a Type I, in the sense that they could harness nearly all the energy from their sun,
before they had any technology at all.