I created drills with hole wizard. I changed options, document properties and checked box to show ANSI sizes for drills.
Have you updated your SolidWorks recently? Were you using a custom configured calloutformat.txt file? Are you pointing to the proper file in System Options > File Locations > Hole Callout Format File.
The callout to get ANSI drill sizes is <hw-fstsze>. <hw-diam> will just pull the dimensional size regardless of what is toggled over in the left feature manager.
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