(Systemic is the correct term, not systematic as I wrote)
None of them are part of the system except maybe Roger Stone, and most of what they were charged with didn’t have anything to do with the campaign. They were easy targets in an attempt to make Special Council look like it was accomplishing something.
Manafort and Gates were charged with financial crimes that took place years before the election.
Stone is charged with procedural crimes (not cooperating with the investigation) and will probably walk.
Flynn was charged with lying to the FBI about talking to the Russian Ambassador several weeks before the new administration took office - a violation of the Logan act, but it had nothing to do with the campaign.
Cohen isn’t related to the campaign at all.
The rest are fringe nobodies.