I was notified to update my AutoAds for my site to allow this new 'Related Search - Navigation Unit'. When I went in to approve it, all of the descriptive text related to this 'new' unit sounds almost exactly like the old Google Link Units.
Considering I made virtually all my revenue from the old 'link units', I'm not sure if this is just another name for what Google used to have in place but removed in 2021.
I haven't seen this new ad unit appear on my site yet, so I don't know if I'm just misunderstanding what it is.
For those who have seen it, has Google basically re-enabled link units but under a different name and incorporated it into their AutoAd system (once the publisher/webmaster) authorized it?