Here are the data structures with brief descriptions:

cib_api_operations_s
cib_callback_client_s
cib_notify_client_s
cib_s
crm_action_s
crm_cluster_s
crm_graph_functions_s
crm_graph_s
crm_peer_node_s
crm_time_period_s
ipc_client_callbacks
lrmd_api_operations_s
lrmd_event_data_s
lrmd_key_value_s
lrmd_list_s
lrmd_op_info_s
lrmd_rsc_info_s
lrmd_s
mainloop_fd_callbacks
md5_ctx
notify_data_s
op_digest_cache_s
pcmk__alert_t
pcmk__cli_option_s
pcmk__client_s
pcmk__cluster_option_s
pcmk__colocation_t
pcmk__common_args_t
pcmk__deleted_xml_s
pcmk__ipc_header_s
pcmk__ipc_methods_s
pcmk__message_entry_s
pcmk__output_s	This structure contains everything that makes up a single output formatter
pcmk__remote_s
pcmk__supported_format_s
pcmk__time_us
pcmk_controld_api_node_t
pcmk_controld_api_reply_t
pcmk_ipc_api_s
pcmk_nvpair_s
pcmk_pacemakerd_api_reply_t
pe__location_constraint_s
pe__order_constraint_s
pe_action_s
pe_action_wrapper_s
pe_match_data
pe_node_s
pe_node_shared_s
pe_op_eval_data
pe_re_match_data
pe_resource_s
pe_rsc_eval_data
pe_rule_eval_data
pe_tag_s
pe_ticket_s
pe_working_set_s
remote_proxy_s
resource_alloc_functions_s
resource_object_functions_s
rsc_ticket_s
stonith_api_operations_s
stonith_callback_data_s
stonith_event_s
stonith_history_s
stonith_key_value_s
stonith_s
svc_action_private_s
svc_action_s
synapse_s
te_timer_s
timer_rec_s
xml_private_s