public static boolean isReservedDynamicLabelName(String name, AddressFactory addrFactory) {
		String prefix = findDynamicPrefix(name);
		if (prefix == null) {
			return false;
		}
		int len = prefix.length();
		if (name.length() < len + 1) {
			return false;
		}
		return parseDynamicName(addrFactory, name) != null;
	}
Returns true if the given name could match a default dynamic label (EXT, LAB, SUB, FUN, DAT)
at some address.
WARNING! Does not handle dynamic labels which use data-type prefixes -
see {@link #isDynamicSymbolPattern(String, boolean)} for more liberal check
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/symbol/SymbolUtilities.java