Make BuddyPress Members page obey its Page layout setting in Genesis. https://sridharkatakam.com/make-buddypress-members-page-obey-page-layout-setting-genesis/

functions.php

/**
 * Make BuddyPress Members page obey its Page layout setting
 */
add_filter( 'genesis_pre_get_option_site_layout', 'sk_do_members_page_layout' );
function sk_do_members_page_layout( $opt ) {

	// if the current page is not the members directory, abort.
	if ( ! bp_is_members_directory() ) {
		return;
	}

	// get the list of BuddyPress pages from wp_options table
	$page_array = get_option( 'bp-pages' );

	$opt = get_post_meta( $page_array['members'], '_genesis_layout', true ); // where $page_array['members'] is the ID of BuddyPress Members page

	return $opt;

}

functions2.php

add_filter( 'genesis_pre_get_option_site_layout', 'sk_do_buddypress_page_layout' );
/**
 * Make BuddyPress Members and Groups pages obey their Page layout setting
 */
function sk_do_buddypress_page_layout( $opt ) {

	// if the current page is not the members directory or groups page, abort.
	if ( ! ( bp_is_members_directory() || bp_is_groups_component() ) ) {
		return;
	}

	// get the list of BuddyPress pages from wp_options table
	$page_array = get_option( 'bp-pages' );

	if ( bp_is_members_directory() ) {
		$opt = get_post_meta( $page_array['members'], '_genesis_layout', true );
		// where $page_array['members'] is the ID of BuddyPress Members page
	}

	if ( bp_is_groups_component() ) {
		$opt = get_post_meta( $page_array['groups'], '_genesis_layout', true );
		// where $page_array['groups'] is the ID of BuddyPress Groups page
	}

	return $opt;

}

Updated to add code that works for both Members and Groups BuddyPress pages.