How to Reference three authors and their papers in a stretch
You should check with the typesetters/publication team for their style guide and make sure they realize that 5, 6, 7 are different groups if that is the case. Clearly the version they rewrote assumes they are from the same group. That might still be appropriate if the author lists differ but the senior author/laboratory is consistent.

Your last example is fine, but may or may not comport to their preferred style.