contributor

philanthropist

Donor to charitable causes

• benefactorOne who gives aid
• patronRegular supporter or customer
• sponsorFunder of activities

backer · giver · donor · funder · grantor · subscriber · pledger · endower · tithe · benefactress

advocate

Public cause supporter

• championTop competitor, or advocate
• proponentOne who advocates something
• endorserOne who publicly approves

promoter · upholder · defender · ally · backer · sympathizer · enthusiast · volunteer · helper · assistant

member

One who belongs

• volunteerUnpaid willing participant
• stakeholderParty with an interest
• participantOne who takes part

entrant · attendee · delegate · representative · signatory · partaker · player · actor · agent · party

partner

One who shares activity

• coauthorJoint creator of text
• coworkerFellow employee
• teammateFellow squad member

co-creator · collaborator · associate · colleague · cooperator · co-developer · co-investigator · co-founder · co-editor · co-producer

author

Creator of written works

• columnistRecurring newspaper feature writer
• correspondentJournalist covering distant events
• journalistNews profession practitioner

essayist · blogger · commentator · pundit · critic · reviewer · editorialist · freelancer · stringer · op-ed

pioneer

Early explorer or settler

• inventorCreator of original devices
• creatorOne who produces something
• visionaryImaginative planner of futures

trailblazer · originator · developer · designer · architect · engineer · entrepreneur · founder · initiator · catalyst

• donorsdonor, blood donor, organ donor, living donor, bone marrow donor
• student mediastudent newspaper, school newspaper, campus paper, school paper, student press
• helpersnurse, helper, volunteer, aide, assistant
• content sharerssharer, poster, uploader, creator, blogger
• online contributorseditor, moderator, uploader, submitter, commenter
• punditscommentator, pundit, political commentator, analyst, talking head