They're still not low enough to shift
this transaction (even using
third party broadcast/accelerator sites) after I inadvertently set the fee to 0.00000001 no 0.0000001 - Any help would be appreciated given "Trust" wallets and "Core" wallets don't include unconfirmed TX in new transactions.
1 sat/vbyte transactions are very many and not likely the mempool is going to be congested up to that. If 2 sat/vbyte is used, the transaction likely would have been confirmed. The transaction support RBF which can be used to pump the fee.
Well, it costs 0.005 BTC to accelerate that transaction via Binance and F2Pool, ViaBTC even asked for 0.0077 BTC. By the way, you have enabled RBF, so, what's the problem? Isn't it possible for you to either use RBF or Child Pays For Parent?
I think there is no other hope unless someone pays out of her pocket or someone has an access to some mining pools to manually include your transaction.
Paid accelerators are very expensive, but definitely he can use RBF.