The usual over and undersquare engine variances really that's all, all these engines are designed as low revving torque monsters like most VAG engines. You can make 600+hp on any of them really, read the description of this for example, not sure of the hp but the times would suggest a fair amount, likely 700+ as stock on a 12v, other engines pretty much similar in terms of durability;
Generally on oem bore/stroke peak hp is around the oem 6800rpm limit, even 1000hp ones with an 8500rpm limit have peak power at 6800rpm due to the fundamental dynamics from wha