I understand that bitcoin-core introduced the IsStandard() check in v0.9(?) to prevent non-standard transactions from being broadcast (unless in a mined block).
I'm interested to know whether there are any current mining pools or miners that will process non-standard transactions - i.e. they're running a non-default configuration that will permit the non-standard transactions to be submitted using sendrawtransaction (or another method) and mine them.
When I say non-standard, I mean that the transaction will be rejected because it contains non-standard inputs (i.e., inputs that return false when evaluated by IsStandard()).
I already understand that testnet is more permissive in this sense but I'm specifically interested in miners on mainnet.
Note: This question is for academic purposes in support a paper I am writing.