Here is a list of all documented namespace enums with links to the namespaces they belong to:

AnchorPreset : ax
CameraFlag : ax
EmissionShapeType : ax
EvaluateType : ax
GlyphCollection : ax
LabelEffect : ax
MATRIX_STACK_TYPE : ax
MEMediaState : ax
MEVideoPixelFormat : ax
PixelFormat : ax::rhi
ResolutionPolicy : ax
ScriptEventType : ax
SetIntervalReason : ax
TextHAlignment : ax
TextVAlignment : ax