The Tyndale House Greek New Testament has many wonderful qualities to it, not least its order of books. The order you will find is: Gospels, Acts, Catholic Epistles, Pauline Epistles, and Revelation. I love it! This reflects a pattern found in the ancient uncial manuscripts of the New Testament. This pattern, as you can see, was also followed in the text of Westcott-Hort as well as in Tregelles.
The latter name is especially relevant, since the THGNT is based on Tregelles' nineteenth century Greek New Testament. I do wish, though, it had also followed Tregelles in placing Hebrews after 2 Thessalonians.
Maybe in a later edition?
It's just a fun thing to think about!
(Note: I forgot to include in my chart the Robinson-Pierpont Greek New Testament. It too places Hebrews after the book of 2 Thessalonians.)