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

[detail level 12]

CAFSKClient	Client for audio-based transmissions. Requires Arduino tone() function, and a module capable of direct mode transmission using DIO pins
CAPRSClient	Client for APRS communication
CAX25Client	Client for AX25 communication
CAX25Frame	Abstraction of AX.25 frame format
CBellClient	Client for Bell modem communication. The public interface is the same as Arduino Serial
CBellModem_t	Definition of the Bell-compatible modem
CCC1101	Control class for CC1101 module
CDataRate_t	Common data rate structure
CExternalRadio	Class to interface with external radio hardware
CFSK4Client	Client for FSK-4 communication. The public interface is the same as Arduino Serial
CFSKRate_t	Data rate structure interpretation in case FSK is used
CHellClient	Client for Hellschreiber transmissions
CITA2String	ITA2-encoded string
CLLCC68	Derived class for LLCC68 modules
CLoRaRate_t	Data rate structure interpretation in case LoRa is used
CLoRaWANBand_t	Structure to save information about LoRaWAN band
CLoRaWANBandNum_t	IDs of all currently supported bands
CLoRaWANChannel_t	Structure to save information about LoRaWAN channels. To save space, adjacent channels are saved in "spans"
CLoRaWANChannelSpan_t	Structure to save information about LoRaWAN channels. To save space, adjacent channels are saved in "spans"
CLoRaWANEvent_t	Structure to save extra information about uplink/downlink event
CLoRaWANMacCommand_t	Structure to save information about MAC command
CLoRaWANMacCommandQueue_t	Structure to hold information about a queue of MAC commands
CLoRaWANMacSpec_t	MAC command specification structure
CLoRaWANNode	LoRaWAN-compatible node (class A device)
▼CModule	Implements all common low-level methods to control the wireless module. Every module class contains one private instance of this class
CRfSwitchMode_t	Description of RF switch pin states for a single mode. See setRfSwitchTable for details
CSPIConfig_t	SPI configuration structure
CMorseClient	Client for Morse Code communication. The public interface is the same as Arduino Serial
CnRF24	Control class for nRF24 module
CPagerClient	Client for Pager communication
CPhysicalLayer	Provides common interface for protocols that run on LoRa/FSK modules, such as RTTY or LoRaWAN. Also extracts some common module-independent methods. Using this interface class allows to use the protocols on various modules without much code duplicity. Because this class is used mainly as interface, all of its virtual members must be implemented in the module class
CRadioLibAES128	Class to perform AES encryption, decryption and CMAC
CRadioLibBCH	Class to calculate Bose–Chaudhuri–Hocquenghem (BCH) class of forward error correction codes. In theory, this should be able to calculate an arbitrary BCH(N, K) code, but so far it was only tested for BCH(31, 21)
CRadioLibCRC	Class to calculate CRCs of varying formats
CRadioLibHal	Hardware abstraction library base interface
CRadioLibPrint	Printing class, based on Arduino Print class with additional encodings
CRF69	Control class for RF69 module. Also serves as base class for SX1231
CRFM22	Only exists as alias for Si4432, since there seems to be no difference between RFM22 and Si4432 modules
CRFM23	Only exists as alias for Si4431, since there seems to be no difference between RFM23 and Si4431 modules
CRFM95	Only exists as alias for SX1276, since there seems to be no difference between RFM95 and SX1276 modules
CRFM96	Only exists as alias for SX1276, since there seems to be no difference between RFM96 and SX1276 modules
CRFM97	Only exists as alias for SX1277, since there seems to be no difference between RFM97 and SX1277 modules
CRFM98	Only exists as alias for SX1278, since there seems to be no difference between RFM98 and SX1278 modules
CRTTYClient	Client for RTTY communication. The public interface is the same as Arduino Serial
CSi4430	Derived class for Si4430 modules
CSi4431	Derived class for Si4431 modules
CSi4432	Derived class for Si4432 modules
CSi443x	Base class for Si443x series. All derived classes for Si443x (e.g. Si4431 or Si4432) inherit from this base class. This class should not be instantiated directly from Arduino sketch, only from its derived classes
CSSTVClient	Client for SSTV transmissions
CSSTVMode_t	Structure to save data about supported SSTV modes
CSTM32WLx	Derived class for STM32WL modules
CSTM32WLx_Module
CStm32wlxHal	Hardware Abstraction Layer for STM32WL
CSX1231	Control class for SX1231 module. Overrides some methods from RF69 due to different register values
CSX1233	Control class for SX1233 module. Overrides some methods from SX1231/RF69 due to different register values
CSX1261	Derived class for SX1261 modules
CSX1262	Derived class for SX1262 modules
CSX1268	Derived class for SX1268 modules
CSX126x	Base class for SX126x series. All derived classes for SX126x (e.g. SX1262 or SX1268) inherit from this base class. This class should not be instantiated directly from Arduino sketch, only from its derived classes
CSX1272	Derived class for SX1272 modules. Also used as base class for SX1273. Both modules use the same basic hardware and only differ in parameter ranges
CSX1273	Derived class for SX1273 modules. Overrides some methods from SX1272 due to different parameter ranges
CSX1276	Derived class for SX1276 modules. Overrides some methods from SX1278 due to different parameter ranges
CSX1277	Derived class for SX1277 modules. Overrides some methods from SX1278 due to different parameter ranges
CSX1278	Derived class for SX1278 modules. Also used as base class for SX1276, SX1277, SX1279, RFM95 and RFM96. All of these modules use the same basic hardware and only differ in parameter ranges (and names)
CSX1279	Derived class for SX1279 modules. Overrides some methods from SX1278 due to different parameter ranges
CSX127x	Base class for SX127x series. All derived classes for SX127x (e.g. SX1278 or SX1272) inherit from this base class. This class should not be instantiated directly from Arduino sketch, only from its derived classes
CSX1280	Derived class for SX1280 modules
CSX1281	Derived class for SX1281 modules
CSX1282	Derived class for SX1282 modules
CSX128x	Base class for SX128x series. All derived classes for SX128x (e.g. SX1280 or SX1281) inherit from this base class. This class should not be instantiated directly from Arduino sketch, only from its derived classes
Ctone_t	Structure to save data about tone