I'm here for you.
Since there is an inactive (you know who) owner on those streams, I can't take over stream ownership and facilitate a transfer.
If the stream owner deleted their account, I could take over ownership of those streams and add owners. I don't recommend that route for your situation for various reasons.
I can monitor content in those streams for Terms of Use, but for user created streams, I give wide benefit of the doubt for Stream Description and Stream Rules compliance. Me going in a user created stream and disapproving stuff is exceptionally rare.
I have seen one inactive stream get a new Mod added by Imgflip, you could appeal to
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