Yes, and it's something I've been tracking for years now. The consistencies across cases are remarkable when you actually sit down and map them out - the table examination, the light source with no visible origin, the instrument that appears from outside the visual field. Witnesses separated by decades and continents describing near-identical procedural sequences with no plausible way of having coordinated their accounts.
What strikes me most is the emotional texture matches as well. Not just the physical details. The same described feeling of clinical detachment from the beings, a kind of professional indifference that witnesses often find more disturbing than outright hostility.
I've corresponded with a researcher in the States who catalogued over 200 accounts and found statistically significant clustering around roughly eight specific procedural elements. The probability of that being cultural contamination alone doesn't hold up once you filter out post-Barney Hill cases.
Would be genuinely interested to hear whether others have noticed regional variations in the accounts, because I suspect there might be some subtle differences that get smoothed over when people focus only on the headline similarities.