A melange of mellifluous morphemes

1. Miller - a person who owns or works in a corn mill

2. Milliner - a person who makes or sells women's hats

3. Millionaire - a person whose assets are worth one million pounds or dollars or more

4. Millenarian/Millennialist - a person who believes in millenarianism (ie the doctrine of or belief in a future (and typically imminent) thousand-year age of blessedness, beginning with or culminating in the Second Coming of Christ. It is central to the teaching of groups such as Adventists, Mormons, and Jehovah's Witnesses)

5. Millerite - a person who believed in the specific form of Millenarianism connected with the teachings of William Miller (1782-1849), who in 1833 first shared publicly his belief that the Second Advent of Jesus Christ would occur in roughly the year 1843–1844

6. Millennial - a person reaching young adulthood in the early 21st century

7. Militarist - a person who believes that a country should maintain a strong military capability

8. Militant - a person who favours confrontational or violent methods in support of a political or social cause

9. Meliorist - a person who advocates meliorism (ie the belief that the world can be made better by human effort)
10. Melancholic - A person who feels or expresses pensive sadness
[PS Minimalist - a person who advocates or practises minimalism (ie in art, a movement that arose in the 1950s, characterised by the use of simple, massive forms or in music, an avant-garde movement characterised by the repetition of very short phrases which change gradually, producing a hypnotic effect)]

The millenarian miller was militant in his advocacy of Millerite views.
The millionaire milliner was, politically, a militant militarist.
The melancholic millennial was something of a meliorist.