Amphenomenon, I think you've managed to confuse the thread.

In Bitcoin sometimes a block is created that doesn't make it into the longest chain.  This is unavoidable and has always occurred and cannot be avoided unless mining becomes completely centralized.  At the very least it happens when two miners find a block at close enough to the same time that they couldn't have heard each other's announcement.

Early in Bitcoin users called these things "orphan blocks" because when they were the miner of the blocks the coinbase payment to them would show as "orphan" in the wallet.  But it wasn't the block that was orphan, it was the transaction-- the transactions parent block no longer existed.  Some people complained about the use of the term "orphan block" because that term was already in use in side the software for blocks whose parent wasn't yet fetched.   But this latter usage isn't something anything but developers were aware of because the parents always (eventually) got fetched and so users were never aware of these temporary orphans.   Stale blocks however are common and are of some interest to users (particularly miners).   The term orphan block continued to be used to refer to stale blocks.  And whenever you hear someone say "orphan block" they are just referring to stale blocks.

This is especially true because the Bitcoin software was changed long ago so that 'orphan blocks' (ones where the parent isn't known) are just completely impossible:  Nodes now only fetch blocks when they're part of a header chain, and so the parents are *always* known.

Sites like BC.i were always plotting stale blocks.  Finding them is hard because they have never propagated well, since the deployment of compact blocks in 2016 they propagated even worse.   Bc.i used to connect to thousands of nodes which would let them see many stale (which they called orphan) blocks but not all of them... but in more recent years bc.i seems to be largely abandoned and this statistic is not maintained anymore, unsurprising since it was always difficult to collect.

Probably at this point people should stop correcting on the difference between orphan and stale.  Now that orphan blocks aren't even a thing anymore and haven't been for a long time,  the correction is probably adding much more confusion than it solves.