Horseland, Big City Greens, and The King of Queens' intros played all at once!

Horseland is owned by WildBrain. It came on CBS via the former block Cookie Jar TV. All 39 episodes are on DVD and up on YouTube.

The King of Queens is owned by Sony. It came on CBS and currently airs on Country Music Television or CMT. All 207 episodes are on DVD and Blu-ray.

Big City Greens is owned by Disney. It comes on Disney Channel. None of the 85 (so far) episodes are on DVD, but they're available to watch on Disney+ and DisneyNow.