A spell that doesn't have a target of You cannot make use of the Share Spells rules.
For our purposes, spells have two important parts to their entry, range and target and it seems you are getting the two mixed up. The relevant part (emphasis mine) of the Share Spells rule is that:
The druid may cast a spell with a target of “You” on her animal
companion (as a touch range spell) instead of on herself.
The range of a spell only "indicates how far from you it can reach" and a range of personal means that the "spell affects only you." Note that this only determines who it can affect and not who it targets. An example might say:
It is the next part of the information block that denotes what the target of the spell is however e.g.
Share Spells clearly states that the spell must have a target of "You". Merely casting a spell with a range of personal is not sufficient to meet these criteria.
This shouldn't be much of an issue however as whilst it might be theoretically possible to have a spell with a Range of Personal and a target other than yourself (with whatever out of body crisis this might imply) there are not many spells written that way.
To cover some specific examples: