However, he has done a few things that I have sincere appreciation for. Primarily, we made significant gains towards peace in the middle east by negotiating treaties in the region. Another point in the win column (leading up the covid) was the economy. And the last major thing I cared about was reducing the US dependence on Chinese goods and labor (which are made so affordable due to inhumane practices).
Regarding authoritarianism, he has a mixed track record. He had a thing for executive orders, but he also let the states largely handle the civil unrest and covid in the manner they saw fit.
With that having been said, Trump was a Democrat for a long time, and was certainly not a typical political establishment individual. I find it difficult to attribute him to either party.