One way to transfer Timeline animations is using a Plugin Preset. Load up the source scene. Select the character with the animation you like. Delete all other plugins on that character except the Timeline and anything the animation really needs. Save a Plugin preset. Exit that scene without saving. Load the new scene, select the target character and do a Merge Load on the plugin preset you saved. Then you have to add a trigger to play that animation. Save the scene. Repeat for other characters.