Data structure for storing some training models

I trained a model with different variables, How can I store these different models? which data structure should I use?

I used "keras_model_sequential" to train these models.
the class of these models is:
[1] "keras.engine.sequential.Sequential"
[2] "keras.engine.training.Model"
[3] "keras.engine.network.Network"
[4] "keras.engine.base_layer.Layer"
[5] "tensorflow.python.module.module.Module"
[6] "tensorflow.python.training.tracking.tracking.AutoTrackable"
[7] "tensorflow.python.training.tracking.base.Trackable"
[8] "python.builtin.object"

Take a look at keras::serialize_model() and keras::save_model_hdf5()