In many jurisdictions you can be convicted for various levels of murder or manslaughter merely be participating in felony conduct that ends up resulting in the death of another person(s), of course, the degree of culpability may vary depending on your own personal involvement and conduct in relation to the incidents - and for sure, the ones who were most closely situated  with the actual deaths would be more likely to be charged with contributing or causing such conduct... and similar kinds of charges related to the specific deaths could be brought against Trump, Giuliani and/or Don Jr. for inciting various kinds of behaviors that any reasonable person would have known could have caused such outcomes.. so charged persons do not necessarily have to be engaged in the actual violent behavior to be charged with some variation of the consequences and such charges and/or remedies (punishments) end up getting ramped up to higher levels based on deaths that ended up occurring that were likely reasonably foreseeable  even based on things that those higher level politicians were saying to hype up those who ended up participating in the attacks on democratic process and aims (rhetoric) against specific people (perceived political opponents).