Hello there,
It is recommended to update all the cumulative updates.
This update catalogue might help you in getting all updates https://www.catalog.update.microsoft.com/Search.aspx?q=Update+Windows+Server+2016
Here is the update history https://support.microsoft.com/en-us/topic/windows-10-update-history-e6058e7c-4116-38f1-b984-4fcacfba5e5d
Hope this resolves your Query !!
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