Who is the last highwayman?

To some groups within the lower classes, they were representative rebels and heroes, taking back from the nobles what had been unjustly stolen from the poor in the first place (notwithstanding the whole "sharing the loot" theme, as in the Robin Hood narratives).

To the noble and upper classes, highwaymen were nothing more than common thieves, and a dirtier or filthier kind at that ("the nerve of some people - holding up the travel of someone so important as a nobleman or woman").

To the majority, they were just another set of people who made their way in life, in their own way, and God would sort them out.

By far, highwaymen were simply thieves and robbers. They stole from anyone. The fictional stories of taking from the rich to give to the poor is just that, fictional.