Entry Header, First Paragraph, Featured Image Above Content (from second para) and Sidebar on single Posts in Genesis. https://sridharkatakam.com/entry-header-first-paragraph-featured-image-above-the-remaining-content-and-sidebar-on-single-posts-in-genesis/

functions.php

// Register a custom image size for featured images on single Posts
add_image_size( 'post-single', 1200, 300, true );

// Create a shortcode that outputs the URL of author page for the entry author outside the loop
add_shortcode( 'post_author_posts_link_outside_loop', 'sk_post_author_posts_link_shortcode' );
/**
 * Produces the author of the post (link to author archive).
 *
 * Supported shortcode attributes are:
 *   after (output after link, default is empty string),
 *   before (output before link, default is empty string).
 *
 * Output passes through 'genesis_post_author_posts_link_shortcode' filter before returning.
 *
 * @since 1.1.0
 *
 * @param array|string $atts Shortcode attributes. Empty string if no attributes.
 * @return string Shortcode output
 */
function sk_post_author_posts_link_shortcode( $atts ) {

	if ( ! is_singular() ) {
		return;
	}

	$defaults = array(
		'after'  => '',
		'before' => '',
	);

	$atts = shortcode_atts( $defaults, $atts, 'post_author_posts_link_outside_loop' );

	global $post;
	$author_id = $post->post_author;
	$author = get_the_author_meta( 'display_name', $author_id );
	$url = get_author_posts_url( $author_id );

	if ( genesis_html5() ) {
		$output  = sprintf( '<span %s>', genesis_attr( 'entry-author' ) );
		$output .= $atts['before'];
		$output .= sprintf( '<a href="%s" %s>', $url, genesis_attr( 'entry-author-link' ) );
		$output .= sprintf( '<span %s>', genesis_attr( 'entry-author-name' ) );
		$output .= esc_html( $author );
		$output .= '</span></a>' . $atts['after'] . '</span>';
	} else {
		$link   = sprintf( '<a href="%s" rel="author">%s</a>', esc_url( $url ), esc_html( $author ) );
		$output = sprintf( '<span class="author vcard">%2$s<span class="fn">%1$s</span>%3$s</span>', $link, $atts['before'], $atts['after'] );
	}

	return apply_filters( 'genesis_post_author_posts_link_shortcode', $output, $atts );

}

single-post.php

<?php

// Add opening div.single-post-top for entry header + first para
add_action( 'genesis_before_content', 'sk_single_post_top_opening' );
function sk_single_post_top_opening() {
	echo '<div class="single-post-top">';
}

// Add entry header before content
add_action( 'genesis_before_content', 'genesis_entry_header_markup_open' );
	add_action( 'genesis_before_content', 'genesis_do_post_title' );
	add_action( 'genesis_before_content', 'genesis_post_info' );
add_action( 'genesis_before_content', 'genesis_entry_header_markup_close' );

// Show first para before content
add_action( 'genesis_before_content', 'get_first_paragraph' );
/**
 * Echo first paragraph from the current post.
 *
 */
function get_first_paragraph() {

	global $post;

	$content = wpautop( $post->post_content );

	$str = substr( $content, 0, strpos( $content, '</p>' ) + 4 );

	// To remove images from the first paragraph
	// $str = preg_replace( '/<img[^>]+\>/i', '', $str );

	echo '<div class="first-para">' . $str . '</div></div>';

}

// If featured image is present, show it before content
add_action( 'genesis_before_content', 'sk_featured_image' );
function sk_featured_image() {

	if ( $image = genesis_get_image( 'format=url&size=post-single' ) ) {
		printf( '<div class="featured-image-single"><img src="%s" alt="%s" /></div>', $image, the_title_attribute( 'echo=0' ) );

	}

}

// Remove first para from the content
add_filter( 'the_content', sk_remove_first_para, 20 );
function sk_remove_first_para( $content ) {

	$content = preg_replace( '/<p.*?<\/p>/s', '', $content, 1 );

	return $content;

}

// Remove entry header from its default location
remove_action( 'genesis_entry_header', 'genesis_entry_header_markup_open', 5 );
remove_action( 'genesis_entry_header', 'genesis_entry_header_markup_close', 15 );
remove_action( 'genesis_entry_header', 'genesis_do_post_title' );
remove_action( 'genesis_entry_header', 'genesis_post_info', 12 );

// Customize entry meta in the entry header
add_filter( 'genesis_post_info', 'sp_post_info_filter' );
function sp_post_info_filter( $post_info ) {
	$post_info = '[post_date] by [post_author_posts_link_outside_loop] [post_comments] [post_edit]';
	return $post_info;
}

genesis();

style.css

.single-post-top {
	padding: 50px 50px 22px 50px;
	overflow: hidden;
}

.single-post .content-sidebar-wrap {
	background-color: #fff;
	overflow: hidden;
	margin-bottom: 40px;
}

.featured-image-single img {
	vertical-align: top;
}

@media only screen and (max-width: 800px) {

	.single-post-top {
		padding: 0;
	}

	.featured-image-single {
		margin-bottom: 28px;
	}

}