Might have found my own answer finally. Found this book on archive.org, Educational Charts(Arms and Armor) from 1917, pg 7.

Neck-guard, Garde-col, Brech-rander, guarda-goletta, bufeta

The most common name for this piece is a 'haute piece'. It is found most commonly on pauldrons from the first half of the 16th century, though smaller examples are seen in sculpture etc. In the later 15th century.

There are much smaller pieces (strips rivetted on, just barely raised over the armour) called 'stop ribs' by modern authors.

Source: Claude Blair, European Armour 1066-1700