GLTFscene op supports animation switching. In this example you will find a brief explanation on how we approach this with a sidebar and animation name array.

To create GLTF scenes with multiple animations for your characters and objects, you should prepare a 3D scene with multiple animations in your favorite 3D application - for example Blender. In blender this is achieved by creation Actions for your 3D scene.

example uses this 3D model:
"Animated Swimming Great White Shark Loop" (https://skfb.ly/o9nIK) by LasquetiSpice is licensed under Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/).