Google finds thesis, but not indexed google scholar
There is no guarantee: all the Google-Scholar's algorithms are pretty much machine-learning and heuristics.

Still, if your thesis' format is similar to what the other colleagues submitted, the chances are high it would be treated similarly.  Just wait a bit, as @nengel said.

If your thesis itself were very similar, it would be plagiarism: in this case, Google scholar would be right on not indexing your work (regardless of the algorithmic process that led to non-indexing).