I’m going to admit I’m not sure what is going on and why there were so many more that dwindled to a one, but here’s more detail, giving my site starzen as an example:
This seems to be picking out metadata about the search control?
Can someone explain to me why one would expect there to be more than one?
An explanation on what this is for on stackoverflow: seo - What's a `<script type='application/ld+json'>{jsonObj}</script>` in a `head` section do? - Stack Overflow
It kind of suggests the right number is … ONE?
I guess someone could look at the wayback machine or another archive tool and check the population of metadata to see what these once were?