I’m confused by your question. They mention Connect in the FAQ but this only applies to instant payouts, honestly it seems more confusing that they mention Connect at all in this context. What are you getting at or trying to figure out with your question?
I’m interested because my business used Stripe Connect but this change seems to have zero change for me. If businesses want instant payouts they can decide that on their own and if they want to eat the fee, it doesn’t matter to me.
There are going to be thousands. I've seen several small businesses in niche areas that happen to use Stripe Connect to offload all of the payments to a company's existing Stripe account.
All companies taking funds via Stripe Connect will know they are doing so via Stripe, so I don't think a list of Connect providers would help here.
I’m interested because my business used Stripe Connect but this change seems to have zero change for me. If businesses want instant payouts they can decide that on their own and if they want to eat the fee, it doesn’t matter to me.