The name reached its all-time peak in 2004 with 79 births ranking #2230. RISING Recent data shows the name is currently rising.
Brayden is a modern spelling variant of Braden and belongs squarely to the English-language -den trend. Its source is much clearer as a spelling choice than as a separate old traditional name.
The name rose as the more popular spelling in the broader Braden and Brayden family. That makes it a good example of how modern naming often keeps the sound while shifting the look.