This code system http://hl7.org/fhir/group-type defines the following codes:

CodeDisplayDefinition
person PersonGroup contains "person" Patient resources.
animal AnimalGroup contains "animal" Patient resources.
practitioner PractitionerGroup contains healthcare practitioner resources (Practitioner or PractitionerRole).
device DeviceGroup contains Device resources.
careteam CareTeamGroup contains CareTeam resources.
healthcareservice HealthcareServiceGroup contains HealthcareService resources.
location LocationGroup contains Location resources.
organization OrganizationGroup contains Organization resources.
relatedperson RelatedPersonGroup contains RelatedPerson resources.
specimen SpecimenGroup contains Specimen resources.
<status value="active"/><experimental value="false"/><date value="2021-01-05T10:01:24+11:00"/><publisher value="HL7 (FHIR Project)"/><contact><telecom><system value="url"/><value value="http://hl7.org/fhir"/></telecom><telecom><system value="email"/><value value="fhir@lists.hl7.org"/></telecom></contact><description value="Types of resources that are part of group."/><jurisdiction><coding><system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/><code value="001"/><display value="World"/></coding></jurisdiction><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/group-type"/><content value="complete"/><concept><code value="person"/><display value="Person"/><definition value="Group contains "person" Patient resources."/></concept><concept><code value="animal"/><display value="Animal"/><definition value="Group contains "animal" Patient resources."/></concept><concept><code value="practitioner"/><display value="Practitioner"/><definition value="Group contains healthcare practitioner resources (Practitioner or PractitionerRole)."/></concept><concept><code value="device"/><display value="Device"/><definition value="Group contains Device resources."/></concept><concept><code value="careteam"/><display value="CareTeam"/><definition value="Group contains CareTeam resources."/></concept><concept><code value="healthcareservice"/><display value="HealthcareService"/><definition value="Group contains HealthcareService resources."/></concept><concept><code value="location"/><display value="Location"/><definition value="Group contains Location resources."/></concept><concept><code value="organization"/><display value="Organization"/><definition value="Group contains Organization resources."/></concept><concept><code value="relatedperson"/><display value="RelatedPerson"/><definition value="Group contains RelatedPerson resources."/></concept><concept><code value="specimen"/><display value="Specimen"/><definition value="Group contains Specimen resources."/></concept></CodeSystem>