u/Lorinthi
If memory serves, four Inquisitors(including the grand inquisitor) die in the rebels TV show. Two more die in unrelated Ahsoka series. Thrawn himself falls victim to the plot armor Filoni throws at his protags/OCs - dying or being defeated due to one bullshit plot contrivance or another.
That's to say nothing of the scores of non-force sensitive Imperial characters that are cartoonishly stupid, or evil, or both that only exist to die/be defeated en masse or potentially defect to the rebels/protags. Filoni treats antagonists as cannon fodder that only exist to die or be defeated and it just sucks - and it makes it so that the only time they have a chance to shine is in prequels or whatnot.
He's such a fucking hack. That's to say nothing of him plagerizing Lana Beniko and calling her Shin Hati