Handling PayPal payouts in review and testing in sandbox

I'm implementing Payouts API and I'm trying to test and understand the complete flow of the payout.

In the sandbox, I managed to test these flows:

1. Receiver does not have an account: statuses: pending -> unclaimed -> successful
2. Receiver has an account: pending -> successful

There are a lot of things that I'm not able to test in the sandbox, so I want to see if there are ways to test it, and if not, what would be the actual status changes in the live environment. To summarize my questions:

1. How to test a flow in the sandbox where payout ends up in onhold status?
2. How to test a flow in the sandbox where payout ends up in blocked status?
3. From which status can payout transition to onhold or blocked status? For example, does it go directly from pending to onhold/blocked, or maybe it goes something like pending -> unclaimed -> held. Basically, did sender already have their funds deducted when this happened? I need to track moving of the funds, but I'm not sure if there was any movement at this point.
4. In case the PayPal rejects the payout that is in onhold/blocked status, to which status it transitions to? From my understanding payout will go to returned status, but there are also other statuses, like: reversed, refunded, failed.