There's generally 3 types of leg kicks in the major leagues:
A leg sweep: which is a bigger more sweeping one like David Price's https://www.youtube.com/watch?v=MJ9h-9O91E8
A more internally rotated sweep: Doesn't extend out as far and the foot is ahead of the leg like Jake Arrieta https://www.youtube.com/watch?v=CqNxpOppOWs
Hybrid Leg sweep: Mixture of the first two, you see this with guys like Aroldis Chapman https://www.youtube.com/watch?v=dnAljjHr-ZA
Key is not to get linear, almost every major league pitcher is rotational in their stride. The whole up down out thing doesn't work well. So the short answer is, if your stride is rotational and you feel comfortable and consistent doing it, don't change a thing.