@Minkar fun fact: you used to not be able to Stifle the dreadnought.
@studderingdave the list he provided is resilient to null rod. If you want to make it even less impacted, you could remove some mix of Steel Overseers, Hangarback Walker, and Animation Modules to maindeck the Foundry Inspectors. Then you can put something fun in its place in the sideboard: probably Chief of the Foundry, Precursor Golem, or something to help against Dredge.
Alternatively, you could check out some of Montolio's lists that Brassman mentions.