This might be a bit of an edge case, but how often are ATS systems focusing solely on vertical grouping like suggested in the parser deep dive in order to group

This might be a bit of an edge case, but how often are ATS systems focusing solely on vertical grouping like suggested in the parser deep dive in order to group information? I ask this because I have seen resumes that employ a two column layout where the section title is on the left and the information for that section is on the right (possibly with multiple lines in the same section) separated by a 1 line gap between sections in most cases (the experience section is the one exception to that on my resume). My resume is also like this and I haven't had too much trouble with it (yet). When I ran an example of this type of resume through the tool, it found the basic profile information but blanked on everything else - I would imagine that some other tools might employ things like OCR to solve this case as the text would be mostly reasonably grouped together in OCR output. Edit: Fixed saying right twice instead of left and right. I guess the only direction is right when you are barely awake at 1AM