Here's some analysis that shows Trump comes lowest in complexity among the last 15 presidents that were analyzed. https://www.newsweek.com/trump-fire-and-fury-

Here's some analysis that shows Trump comes lowest in complexity among the last 15 presidents that were analyzed. https://www.newsweek.com/trump-fire-and-fury-smart-genius-obama-774169 https://www.newsweek.com/trump-fire-and-fury-smart-genius-ob... >The words were run through a variety of lexicological analyses, besides the Flesch-Kincaid, and the results were the same. In every one, Trump came in dead last. Trump also uses the fewest "unique words" (2,605) of any president—Obama was the best at 4,869—and uses words with the fewest average syllables, with 1.33 per word, compared to positively multi-syllabic president Hoover at 1.57. >"By every metric and methodology tested, Donald Trump's vocabulary and grammatical structure is significantly more simple, and less diverse, than any President since Herbert Hoover, when measuring "off-script" words, that is, words far less likely to have been written in advance for the speaker," Factba.se CEO Bill Frischling wrote. "The gap between Trump and the next closest president ... is larger than any other gap using Flesch-Kincaid. Statistically speaking, there is a significant gap."