As I think retro is alluding to, there is not much of a difference between different variations of Theravada. They all see the Pali Canon as authoritative and the text to go to and then also the Commentaries for further elaboration.
The differences are primarily around ordination lineages. See:https://en.wikipedia.org/wiki/Theravada ... av.C4.81da
For lay people, it is all pretty much the same; 4 Noble Truths, 8-fold Path, Pali Canon, vipassana meditation with periods of sitting and walking meditation in group activities.
For many Theravadins today I imagine the differences are mostly around how much authority is given to the Commentaries. There are some who reject the Commentaries and prefer to focus on the 5 Nikayas. Others place the Commentaries on a level equal to the Canon and then others still take a more middle position of placing the Pali Canon in highest regard and the Commentaries for additional reference but where the 2 come in conflict, to take the position found in the Pali Canon.