I've seen a transaction with 24 ancestors in the mempool, Is there a sensible use of this?
Looking at the ancestor transactions this looks like someone is writing chunks of data to the chain.

The couple of transactions I looked at all have an OP_RETURN output and then send to bc1qraz56wyj28km560u2pyyml9dr3uaxv9sts67ct, chaining them together.

Looking at the OP_RETURN data, this could also be some kind of timestamping or another sort of anchoring as the data doesn't look random:

000c486100023...
000c487000029...
000c48740002e...
000c487500024...
000c48780002f...
000c487b0002a...
000c487e0002a...
000c48810002c...


It's hard to say. Maybe someone else has more insight into this.