In a 2v2 game, for cards that refer to "Your units", does that include my ally/teammate's units as well or just mine?

In a 2v2 game, cards that refer specifically to "your units" do not include your teammate's units.

According to Rule 484.8.d and Rule 740.1, the term "friendly" is used to describe game objects controlled by either you or your teammate. However, when a card specifically uses the possessive "your units," it refers exclusively to the units under your personal control.

If a card's ability is intended to affect both you and your teammate, it will use the term "friendly" (e.g., "Ready a friendly unit").