Angela,
To be honest, I know most of the architects in the US, and a few abroad. While I don't sit in their offices while they design, only one, Perry Dye, has ever even joked about such a thing. And, it doesn't take CAD to repeat yourself. Ron Whitten found the same par 3 hole on 73 different Ross courses in researching the Tufts Library.
For that matter, to get started, I have placed old greens plans that sort of fit my general idea on a light table, (or taped them to a window, the old "Aggie Light Table", but they never end up being anywhere near the last design I used after I pasted them down on the new green site.
Now, do most architects have some hip pocket ideas they like? Yes, almost certainly. But, they usually get altered to fit the site from course to course. Do most cram old ideas on a new hole without any regards to the topography? I don't, and I doubt others do, either. That has long been a myth here that only a few select architects actually create their holes in the ideal way......although I will agree a few, like Erin Hills, use every specific feature, like a little knob, while most use general land patterns to dictate design, and then build the green. But most green sites need some work, like flattening the general slope from X% to 1.5-3%, etc., and then, an area of nearly half acre ends up getting touched in some fashion by equipment.
I guess we could get into an argument over what constitutes copying yourself. Frankly, if I had thousands of holes in my library, with my work load, it would be my grandson who ended up copying me (if he got in the biz.....) Most would say the same, LOL>