How to add a custom button to each field of a Custom Post Types Admin Screen

There are similar filters and actions for custom post type (replace $post_type with the name of your post type):

To add new columns filter is: manage_{$post_type}_posts_columns. This filter has one argument, list of all columns, and you need to add your column, and return results.

To display content of the column, action is manage_{$post_type}_posts_custom_column. This action passes the name of the column and post ID. You need to echo the data you want to display, but make sure you check if the column is indeed yours by checking the column name.

add_action('manage_{$post_type}_posts_custom_column', 'my_custom_column', 10, 2);
function my_custom_column($column, $post_id) {
  if ($column == {$my_column_name}) {
    echo '<button>My Button</button>'
  }
}

Replace {$post_type} with the actual name of your post type, and replace {$my_column_name} with the name of the column you have added through the manage_{$post_type}_posts_columns filter.

This is simplified code, you need to create the button you need to use, and handle what the button does.