According to Official Guinness Records,
The most Elvis Presley songs identified from their lyrics in one minute is 14 and was achieved by Paul Ross (UK) of BBC Radio Berkshire, as part of the GWR Day Radio Tour on 12 November 2015. The GWR Day Radio Tour gave radio hosts around the country the chance to attempt record as part of Guinness World Records Day 2015. Paul Ross made his attempt in an Elvis Presley onesie for luck.
For a complete list of 2015 records, please visit 2015 Guinness Records in United Kingdom.