
The one who typically assumes to know a little more inside detail about the team and has a direct path to the coaching staff. They don't normally share information except when they think it will benefit their kid or advance their social position with the coaching staff or club. It's normally more about themselves and the social position than anything. Something about having to be accepted and the willingness to do what they think will make the coaches happy. It doesn't matter who it affects negatively or positively, as long as it's not him/her or their own kid. Anybody else is open game.
Every sport has that parent who sometimes get a little too involved to the point where they think that they're as much a part of the decision making authority that they offer their own opinion(s) to the coaches. Whether those opinions are overlooked or acknowledged they still believe it's important they share what they think because of their own modesty.
These parents are sometimes called the "lawnmower parents", "silent partners", "helicopter mom or dad", "arm-chair managers" etc. Every team has one, do yourself a favor, stay away from them.