Deleting all but a few columns

I'm very new to this, so bare with me. What I'm trying to do is create a function that will delete all but a few specific named columns. We're getting data from a lab with a ton of columns in every sheet that we don't need, and I want to be able to quickly delete the superfluous info. I tried to convert another function I found, but can't get it to do what I want. As you'll see below, it was meant to delete one column with a certain name from a worksheet, and I tried to modify it by simply changing the "=" to "<>" and putting an "Or" in to find all the names I want. That didn't work.

Any help would be appreciated:

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Assuming they're the columns you want to keep, one way you can try is:

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Regards