According to the Oxford English Dictionary, a person who goes on a quest is a "quester". It is an obsolete and rare usage but still correct, and goes back many centuries.
An explorer.
what do you call a person that takes ships into and out of port
A person who takes dictation is commonly referred to as a stenographer or a transcriptionist. They are responsible for accurately transcribing spoken words into written form.
Financer?
A photographer.
a medict.
Ferryman
an assistant.
An actor.
conductor
A pig.
A Counter person.
The person is a participant (taking part in something).