Absolute best strategy to get all choices

I would like to offer a listing of all choices set through plugins and so forth to distant calls. There’s a plugin WP API Choices however it hardly does the job.

There are two potential methods (that I do know of) to get a listing of all choices set within the weblog/website:

• Use $wpdb to run a question like so:

  $option_names = $wpdb->get_col( "SELECT DISTINCT option_name FROM
$wpdb->choices WHERE option_name NOT LIKE '_transient_%'" );

• Use wp_load_alloptions()

Which certainly one of these two could be one of the best ways to retrieve all of the choices? Is there a cleaner manner than both of those two?

Edit: In an ideal world, I wish to use an inbuilt operate for this, as an alternative of writing MySql queries. Additionally, by all choices I’m implying any choice set by a plugin utilizing add_option or update_option capabilities.