So I am trying to figure out the KB number so I know which updates to
Windows 10 Version 1609 had an intial build number of 16299.0 but 16299.15 was the actual first stable release build and the current revision of of build 16299 as of October 17 2017 is 16299.19. The KB that upgrades the initial 16299.15 build to 16299.19 is KB4043961. The only way to uninstall a Feature Update is to revert to your previous version of Windows. There isn't a KB associated with them. There is no KB associated with 16299.15 only the ISO that was released around October 2nd 2017
Really, I need at a minimum build 16176 and less than 16288.
If you want to revert back to build 16176 or 16288 it would mean reverting back to a Insider Preview RS3 build of Windows 10. Insider Preview builds expire after a period of time. At this point you would have to reinstall Windows 10 to revert back to one of those builds since the amount of time between 16288.1 or 16176.1000 and 16299.15 is greater then 15 days.
You might be able to revert to the previous version of Windows provided it's been less then 15 days since you install 16299.15 and/or 16299.19
Just remembered too. The other option is I have a computer that
doesn't have the Fall Creators Update and works fine. However it is
below 16176. I could manually apply the updates to bring it to that
This method will not work.
But it only takes KB numbers. I don't know what KB = 16176.
There isn't one and the build numbers you want to use are Insider Preview builds of the Fall Creators Update so they also don't KB numbers associated with them.
10.0.16176.1000 was released back on April 14 2017
10.0.16288.1 was released back on September 12 2017
All stable Windows 10 updates which change the build number can be found here