How to disable some of the generated image sizes?

Whenever someone uploads an avatar, different image sizes are automatically generated:
128×128, 64×64, 52×52, 26×26, etc.

How do I disable all of them and only allow the ones I need?

I already have the following code in my theme to disable default wordpress image sizes:

/ disable generated image sizes
function shapeSpace_disable_image_sizes($sizes) {
    unset($sizes['thumbnail']); // disable thumbnail size 
    unset($sizes['large']); // disable large size 
    unset($sizes['medium_large']); // disable medium-large size 
    unset($sizes['1536x1536']); // disable 2x medium-large size 
    unset($sizes['2048x2048']); // disable 2x large size
    return $sizes;
}
add_action('intermediate_image_sizes_advanced', 'shapeSpace_disable_image_sizes');

// disable scaled image size
add_filter('big_image_size_threshold', '__return_false');