Currently, based on Get space API page, only one "type" value can be added when querying spaces via REST API, for example:

/api/v2/spaces?type=global
or
/api/v2/spaces?type=personal
or 
/api/v2/spaces?type=knowledge_base
or
/api/v2/spaces?type=collaboration

But after this change, Confluence supports four space types: global, personal, knowledge_base, and collaboration. It will be helpful if multiple values can be set as filters for this parameter, for example

/api/v2/spaces?type=global&type=collabration
or
/api/v2/spaces?type=global,collaboration