What are the main differences -- in meditation practice and discipline -- between different schools of Theravada?

Wikipedia lists schools in this section ... > [Schools of Buddhism (Theravāda subschools)](https://en.wikipedia.org/wiki/Schools_of_Buddhism#Therav%C4%81da_subschools) ... but, those pages which describe each school focus on **doctrine or philosophical aspects** (and don't always emphasise the differences with other subschools). I am interested in aspects that have more to do with **practice and disciplines**, e.g.: - What are the main differences in how monastic life is led in each of these subschools? - What does meditation practice focus on and how does that change from one school to the other? For instance: I know that in the teaching of Mahasi Sayadaw there is an emphasis on verbalising whatever is taking place in the present moment; whereas Ajahn Chah focuses on "opening the heart". I expect other subschools to neglect walking meditation of discourage verbalisation, others not to allow nuns, etc. --- Edit -- an answer mentioned that Wikipedia also has another page ... > Theravada (Monastic orders within Theravāda) ... which discusses *nikayas* rather than *subschools* and so which is more pertinent to my question. Unfortunately, those pages too don't discuss, detail, nor compare, the discipline and meditation practice.