When it comes to programs of the same level (i.e.: equally regarded universities, same country, etc.), do employability rates differ a lot between MBA modalities? I've found these rates harder to find when it comes to online programs, and I wonder if schools are simply throwing both modalities together when it comes to reporting employability rates.

Is there any valuable info on this out there? Any relevant articles, stats, would be very helpful.

There will not be employment data for the vast majority of online programs. Full-time students are all looking for work, but part-time students are not. The comparison would not mean anything. Full time programs feed people into roles designed for MBAs in their 20s. Online MBAs are often aimed at older people with different skills.