Simple categories matching knowledgeable:

• professional,
• academician,
• person,
• authority,
• leader,
• expert,
• party,
• observer,
• people,
• physician,
• communicator,
• adult,
• practitioner,
• individual,

Members with property knowledgeable:

• doctor,
• teacher,
• toxicologist,
• local_leaders,
• blue-goose_alliance,
• beneficiary,
• peer,
• medical_professional,
• industrial_practitioner,
• key_school,
• herbalist,
• parent,
• physician,
• nurse,
• counselor,
• extension_officer,
• attorney,
• government_surveyor,
• trainer,
• scientist,
• woman_leaders,
• pharmacist,
• land_manager,
• annuitant,
• shopkeeper,
• former_combatant,
• lawyer,
• prof,
• tutor,
• elder,
• tom,
• supervisor,
• surgeon,
• dietician,
• professor,
• dermatologist,
• community_consultant,
• financial_manager,
• field_expert,
• geologist,
• youth,
• seasoned_amateur,
• curriculum_designer,
• faculty,
• wildlife_scout,
• state,
• epa_personnel,
• health_educator,
• native_doctor,
• school,
• realtor,
• building_superintendent,
• forester,
• endocrinologist,
• academic_analyst,
• historian,
• regulator,
• sixth_defense,
• mps,
• cooperative,
• herald,
• building,
• community_leaders,
• journalist,
• professional,
• educational_diagnostician,
• conference_moderator,
• legal_guardian,
• user,
• school_administrator,
• water_police,
• peer_teacher,
• rheumatologist,
• plant_breeder,
• juvenile_court,
• marketing_director,
• physical_therapist,
• researcher,
• community_worker,
• neighbor,
• expert,
• mi,
• family_member,
• peer_counselor,
• clinician,
• engineer,
• immunologist,
• market_trader,
• owner,
• genetic_counselor,
• sales_person,
• veterinarian,
• lactation_consultant,
• community_allergist,
• caregiver,
• builder,
• officer,
• landlord,
• case,
• traditional_healer,
• mark,
• respiratory_therapist,
• postal_employee,
• soil_scientist,
• counsellor,
• imam_malik,
• agronomist,
• vendor,
• financial_expert,
• town_treasurer,
• mentor,
• healthcare_provider,
• professional_trainer,
• wildlife_biologist,
• farrier,
• dance_teacher,
• practitioner,
• psychoanalyst,
• job_coach,
• forest_pathologist,
• academician,
• naturalist,
• politician,
• educational_manager,
• midwife,
• breeder,
• allergist,
• consultant,
• support_technician,
• city_engineer,
• operator,
• ceo,
• religious_leaders,
• good_teacher,
• alcohol_counselor,
• recreation_director,
• baronial_herald,
• web_designer,
• lead_engineer,
• environmentalist,
• relief_personnel,
• national_authorities,
• pastor,
• authorised_person,
• reporter,
• scholar,
• developer,
• lab_manager,
• provider,
• branch_representative,
• postal_carrier,
• coach,
• brother,
• manager,
• colleague,
• coastguard,
• boss,
• banker,
• chaplain,
• branch,
• shop_owner,
• social_worker,