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

Norcus
Ncss
Chsla_color_t
Cparser_base
Crgba_color_t
Ncsv
Cparser_config
Cparser_base
Ndetail
Nthread
Cparser_token_buffer
Cscoped_guard
Cparsing_aborted_error
Ndom
Centity_name
Cconst_node
Cdocument_tree
Niface
Cimport_filter
Cdocument_dumper
Njson
Ndetail
Ninit
Cnode
Carray
Cconst_node
Cconst_node_iterator
Cdocument_error
Cdocument_tree
Ckey_value_error
Cnode
Cobject
Cparse_token
Cparser_base
Cparser_stats
Cparser_thread
Cstructure_tree
Cnode_properties
Cwalker
Csubtree
Ctable_range_t
Nsax
Ndetail
Centity_name
Chash
Celem_scope
Cdoctype_declaration
Cparse_token
Cparser_attribute
Cparser_base
Cparser_element
Cparser_thread
Nspreadsheet
Niface
Cexport_factory
Cexport_sheet
Cimport_array_formula
Cimport_auto_filter
Cimport_auto_filter_multi_values
Cimport_auto_filter_node
Cimport_border_style
Cimport_cell_protection
Cimport_cell_style
Cimport_conditional_format
Cimport_data_table
Cimport_factory
Cimport_fill_style
Cimport_font_style
Cimport_formula
Cimport_global_settings
Cimport_named_expression
Cimport_number_format
Cimport_pivot_cache_definition
Cimport_pivot_cache_field_group
Cimport_pivot_cache_records
Cimport_pivot_data_field
Cimport_pivot_data_fields
Cimport_pivot_field
Cimport_pivot_fields
Cimport_pivot_page_field
Cimport_pivot_page_fields
Cimport_pivot_rc_fields
Cimport_pivot_rc_item
Cimport_pivot_rc_items
Cimport_pivot_table_definition
Cimport_reference_resolver
Cimport_shared_strings
Cimport_sheet
Cimport_sheet_properties
Cimport_sheet_view
Cimport_strikethrough
Cimport_styles
Cimport_table
Cimport_underline
Cimport_xf
Caddress_t
Cauto_filter_t
Cborder_attrs_t
Cborder_t
Ccell_format_t
Ccell_style_t
Ccolor_rgb_t
Ccolor_t
Cdocument
Cdocument_config
Cexport_factory
Cfill_t
Cfilter_item_set_t
Cfilter_item_t
Cfilter_node_t
Cfilter_value_t
Cfilterable
Cfont_t
Chash
Cformat_run_t
Cfrozen_pane_t
Cimport_factory
Cimport_factory_config
Cimport_styles
Cnumber_format_t
Cpivot_cache
Cpivot_cache_field_t
Cpivot_cache_group_data_t
Crange_grouping_type
Cpivot_cache_item_t
Cpivot_cache_record_value_t
Cpivot_collection
Cpivot_field_t
Cpivot_item_t
Cpivot_ref_data_field_t
Cpivot_ref_page_field_t
Cpivot_ref_rc_field_t
Cpivot_ref_rc_item_t
Cpivot_table
Cprotection_t
Crange_size_t
Crange_t
Cshared_strings
Csheet
Csheet_view
Csplit_pane_t
Csrc_address_t
Csrc_range_t
Cstrikethrough_t
Cstyles
Ctable_column_t
Ctable_style_t
Ctable_t
Ctables
Cunderline_t
Cview
Nyaml
Cconst_node
Cdocument_error
Cdocument_tree
Cparser_base
Ckey_value
Ccell_buffer
Cconfig
Ccsv_config
Ccss_chained_simple_selector_t
Ccss_document_tree
Cinsertion_error
Ccss_handler
Ccss_parser
Ccss_property_value_t
Ccss_selector_t
Ccss_simple_selector_t
Chash
Ccsv_handler
Ccsv_parser
Cdate_time_t
Cfile_content
Cgeneral_error
Cimport_ods
Cimport_xlsx
Cinterface_error
Cinvalid_arg_error
Cinvalid_map_error
Cjson_config
Cjson_handler
Cjson_parser
Cjson_structure_error
Clength_t
Cline_with_offset
Cmalformed_xml_error
Cmemory_content
Corcus_csv
Corcus_gnumeric
Corcus_json
Corcus_ods
Corcus_parquet
Corcus_xls_xml
Corcus_xlsx
Corcus_xml
Cparse_error
Cparse_error_value_t
Cparse_quoted_string_state
Cparser_base
Csax_handler
Csax_ns_handler
Csax_ns_parser
Csax_ns_parser_attribute
Csax_ns_parser_element
Csax_parser
Csax_parser_default_config
Csax_token_handler
Csax_token_handler_wrapper_base
Csax_token_parser
Cstring_pool
Cthreaded_json_parser
Cthreaded_sax_token_parser
Ctokens
Cvalue_error
Cxml_declaration_t
Cxml_name_t
Cxml_structure_error
Cxml_structure_tree
Centity_name
Chash
Celement
Cwalker
Cxml_table_range_t
Cxml_token_attr_t
Cxml_token_element_t
Cxml_writer
Cscope
Cxmlns_context
Cxmlns_repository
Cxpath_error
Cyaml_config
Cyaml_handler
Cyaml_parser
Czip_archive
Czip_archive_stream
Czip_archive_stream_blob
Czip_archive_stream_fd
Czip_error
Czip_file_entry_header