Okay, all the names you think don't go with Angus I think go rather well, but I gather you are wanting them not to be so rhymey?

So from your list, those names aside, I like Rohan (which you can't use) and Stanley the most.

Others I like that I think go Ok wig your kids names are

Henry
Hamish
Connor
Cohen
Liam
Declan
Ronald
Donald
Malcolm