Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12]

▼NPDFxTMD
CCollinearDPDTag
CCollinearPDFTag
CCouplingFactory	Factory class for creating QCD coupling objects
CDefaultPDFImplementations	Tag types for PDF implementations
CDefaultPDFImplementations< CollinearDPDTag >
CDefaultPDFImplementations< CollinearPDFTag >
CDefaultPDFImplementations< TMDPDFTag >
CGenericCDPDFactory	Factory for collinear double-parton distributions
CGenericCPDFFactory	Factory class for creating collinear PDF objects
CGenericPDF
CGenericTMDFactory	Factory class for creating TMD (Transverse Momentum Dependent) PDF objects
CIAdvancedExtrapolator
CIcAdvancedPDFExtrapolator
CICDPD	Type-erased interface for collinear double parton distribution functions
CIcDPDExtrapolator
CIcDPDInterpolator
CICPDF	Interface for Collinear Parton Distribution Functions (CPDFs)
CIcPDFExtrapolator
CIcPDFInterpolator
CIExtrapolator
CIInterpolator
CIQCDCoupling	Type-erased interface for QCD-coupling implementations
CIReader
CITMD	Interface for Transverse Momentum Dependent (TMD) parton distribution functions
CITMDAdvancedTMDExtrapolator
CITMDExtrapolator
CITMDInterpolator
CIUncertainty	Type-erased interface for PDF uncertainty calculations
CPDFSet	Manages a set of Parton Distribution Functions (PDFs), providing tools for uncertainty and correlation analysis
CPDFType	A type trait to map a tag to a specific PDF interface type
CPDFType< CollinearPDFTag >	Specialization of PDFType for Collinear PDFs
CPDFType< TMDPDFTag >	Specialization of PDFType for Transverse Momentum Dependent (TMD) PDFs
CTMDPDFTag