Hi @kano
This is a SNMP Table 1.3.6.1.2.1.47.1.1.1.1.2.XXX is the Description of the Interface, 1.3.6.1.2.1.47.1.1.1.1.3.XXX is the corresponding VendorType. SNMP Tables function in a <TABLEOID>.<COLUMN>.<ROW> mode. The list you are getting ist just the Description column.
https://oidref.com/1.3.6.1.2.1.47.1.1.1.1
An snmp walk on 1.3.6.1.2.1.47.1.1.1.1 should give you the full table. However I am not sure the needed values are in this table. If not you need to look for the data in a different table maybe.
Regards Marius