I'll leave the ethical discussion about how this analysis can be (ab)used to others and focus just on how you can obtain this data.
SEDE has a table PostHistory that stores in a row with PostHistoryTypeId = 10 the successful closure of a Post. (Close votes or flags that didn't lead to an actual closure are not available in SEDE). In the Text column a JSON is stored that has a Voters property with an array of objects where for each voter Id, DisplayName and whether they used their binding gold badge hammer.
T-SQL has the OPENJSON function that can be used to transform JSON arrays into proper tables so they can be queried and/or projected as for any other column. Here I use a CROSS join after your questions are selected.
Combining all this leads to this SEDE query:
select v.Id [User Link]
, count(*) [# Closed]
from posthistory ph
inner join posts p on p.id = ph.postid
cross apply openjson(text, '$.Voters') with (Id integer '$.Id') v
where ph.posthistorytypeid = 10 -- closed
and p.owneruserid = ##userid:int?395857##
group by v.id
order by count(*) desc
When run today on your Stack Overflow account, no users have been involved in close voting a question of yours more then once
It is rather uninteresting.
As this information should remain private according to some users let's also have a look at the Network Wide Close voters of Franck.
Who could have guessed, he is close vote stalking himself, further some moderators and a gold badge holder on MSE.
That is more interesting.
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