User blog comment:The Smarter, Wiser King Dedede/Associated Production Music used in the Loud House/@comment-24962415-20180725165402

Here's a couple I discovered on the APM site and YouTube for some of the title cards.

The Wild West (a) by Gregor Narholz - A Novel Idea Run For It by Harry Bluestone - One Flu Over the Loud House Seven by Drew Milligan and James Wrigley - Making The Grade Disco Fire by Stephane Huguenin, Yves Sanna, and Christian Padovan - Back Out There

If only more were discovered. Until then, I'll keep searching.