Many airlines have a single GA SOP. However, there are multitude of reasons to make a GA where a single SOP is not appropriate.
At least in airbus SOP all these situations are clearly spelt out. But if pilots are not taught to slam the thrust levers to the limit and to immediately check FMA then incidents can happen. There are at least three incidents on record where pilot nursed the thrust levers short of TOGA and followed short sighted company procedure of not checking FMA immediately reaching in one case 14 feet AAL in poor visibility. What to and how to both are important.