ASN.1, an old standard and though prevalent, does not seem to be any longer changing.
public enum TAG : byte
{
BOOLEAN = 0x01,
INTEGER = 0x02,
BIT_STRING = 0x03,
OCTET_STRING = 0x04,
NULL_TAG = 0x05,
OBJECT_IDENTIFIER = 0x06, //a.k.a. OID
OBJECT_DESCRIPTOR = 0x07, //a.k.a. OID Descriptor
EXTERNAL = 0x08,
REAL = 0x09,
ENUMERATED = 0x0a,
EMBEDDED_PDV = 0x0b,
UTF8_STRING = 0x0c,
RELATIVE_OID = 0x0d,
TIME = 0x0e,
// Reserved 0x0f,
SEQUENCE = 0x10,
SET = 0x11,
NUMERIC_STRING = 0x12,
PRINTABLE_STRING = 0x13,
T61_STRING = 0x14,
VIDEOTEXT_STRING = 0x15,
IA5_STRING = 0x16,
UTC_TIME = 0x17,
GENERALIZED_TIME = 0x18,
GRAPHIC_STRING = 0x19,
VISIBLE_STRING = 0x1a,
GENERAL_STRING = 0x1b,
UNIVERSAL_STRING = 0x1c,
CHARACTER_STRING = 0x1d,
BMP_STRING = 0x1e,
DATE = 0x1f,
TIME_OF_DAY = 0x20,
DATE_TIME = 0x21,
DURATION = 0x22,
I18_OID = 0x23, // Internationalized OID
REL_I18_OID = 0x24 // Internationalized Relative OID
// Reserved 0x25 and above
};