Another good guide. I have used Terraceous Grunt before. Usually in back to basics paired with even stevens. Very specific conditions but the high HP works well in those conditions. I've actually used it more than the 2 units you put in C. The puppet is pretty good in melee mayhem though.
I would place Thane Newsong 1 tier higher just because it can be devastating with Katrelba or even Quora, especially in lower leagues.