NeXT didn't have thin clients because the concept never took off anywhere other than a few niche banking applications.

But it had many of the core pillars e.g. remote home directories, remote/RPC applications. NeXT in particular with frameworks like EOF/PDO pushed for more network centric desktop applications.

It doesn't sound like much today but were pretty new concepts for GUI users.

The reason I mentioned it was that there was talk that the iMac was going to be potentially the first consumer-grade thin client.