What are the resource types for DataCite DOIs?

The resourceTypeGeneral is one of the required metadata fields for registering a DOI. The list of resource types can be found in the DataCite Metadata Schema documentation. It is a controlled vocabulary list and includes:

Audiovisual
Award
Book
BookChapter
Collection
ComputationalNotebook
ConferencePaper
ConferenceProceeding
DataPaper
Dataset
Dissertation
Event
Image
InteractiveResource
Instrument
Journal
JournalArticle
Model
OutputManagementPlan
PeerReview
PhysicalObject
Preprint
Project
Report
Service
Software
Sound
Standard
StudyRegistration
Text
Workflow
Other