Hamrick's VueScan has an OCR module. Readdle PDF Expert has an OCR module. I don't have high sierra handy to test, but these are free to download and test.
I bought VueScan to run my [edit - Fujitsu] SnapScan 1500S (for which they would not provide 64-Bit support), VueScan handles the devices and OCR as well as I ever needed. Totally locally, too - it does not ship the file off to a web host to do the OCR. VueScan will also drop the OCR output as a separate text file.
Readdle PDF Expert only recently got OCR features. As a PDF tool, PDF Expert is very good, but not as rich as Adobe Full Acrobat Pro DC - and nowhere near as expensive as Adobe's subscription buy-in. Of course, you'd have to use separate scanning software to acquire the page images as a PDF. [edit - PDF Expert processes OCR locally, too]
It's noteworthy that some OCR engines are more sensitive to certain settings in an imagery scan. HP is not new to the OCR features, they've done their code, and they've licensed code. I've had some HP scanners that aided OCR better at varying resolutions and levels of grey, some did better with long galleys of consistent print (such as book pages), some better with mixed layouts (such as user manuals and business cards.)