With this shortcode, getting information about plugins of an author, is easy. To add this shortcode, and make it theme independent, we'll use a small plugin. First, create a PHP file fpw-shortcodes.php ( it can have different name, as long as it does not conflict with anything ), with the following content:

<?php
if(!is_admin()) {
	function fpwPluginsInfo($atts) {
		$a = shortcode_atts(array(
			'author' => 'frankpw',
			'expire' => 5,
			), $atts);
        $cache = get_transient(md5('fpw'.serialize($atts)));
        if($cache)
            return $cache;
		$options = array( 
			'timeout' => 15, 
			'body' => array( 
				'action' => 'query_plugins', 
				'request' => array( 
					'author' => $a['author'], 
					'fields' => array( 
						'banners', 
						'icons',
						) 
					) 
				) 
			);
		$response = wp_remote_post('https://api.wordpress.org/plugins/info/1.1/', $options);
		$display = '';
		if (!is_wp_error($response)) {
			$display .= "<h2 class=\"byAuthor\">by {$a['author']}</h2>";
            $plugins = json_decode($response['body'])->plugins;
			$totalDownloads = 0;
			$found = false;
			foreach($plugins as $plugin) {
				$found = true;
                $plugin->icons = (array)$plugin->icons;
				$display .= '<div class="flexContainer">';
				$display .= '<div class="columnLeft">';
				$display .= "<img src=\"{$plugin->icons[ '1x' ]}\" width=\"96\" class=\"pluginIcon\">";
				$display .= '</div>';
				$display .= '<div class="columnMiddle">';
				$display .= "<h3 style=\"margin-bottom: 5px; padding-top: 20px;\">{$plugin->name} ({$plugin->version})</h3>";
				$display .= "by {$plugin->author}";
				$display .= '</div>';
				$display .= '<div class="columnRight">';
				$display .= "<a class=\"button\" href=\"{$plugin->download_link}\">Download</a>";
				$display .= '</div>';
				$display .= '</div>';
				$profile = substr( $plugin->author_profile, strrpos( $plugin->author_profile, '/' ) + 1 );
				$display .= '<div class="flexContainer">';
				$display .= '<div class="columnLeft">';
				$display .= "Author's Profile: <a href=\"{$plugin->author_profile}\">{$profile}</a><br>";
				$totalDownloads += $plugin->downloaded;
				$display .= 'Downloaded: ' . number_format( $plugin->downloaded );
				$display .= '</div>';
				$display .= '<div class="columnMiddle">';
				$display .= "Added: {$plugin->added}<br>";
				$display .= "Updated: {$plugin->last_updated}";
				$display .= '</div>';
				$display .= '<div class="columnRight">';
				$display .= "&nbsp;";
				$display .= '</div>';
				$display .= '</div>';
				$display .= '<hr>';
			}
            if(!$found) {
                $display .= "No plugins for author '<em>{$a['author']}</em>'"; 
            } else {
                $display .= "Total downloads: " . number_format($totalDownloads);
            }
		} else {
            $errorCodes = $response->get_error_codes();
            foreach($errorCodes as $code) {
                $errorMessage = $response->get_error_message($code);
                $display .= "Error : <strong>{$code}</strong> : <em>{$errorMessage}</em><br>";
            }
        }
        $display .= '<hr>';
        set_transient(md5('fpw'.serialize($atts)), $display, $a['expire'] * 60);
		return $display;
	}
	add_shortcode('fpw_plugins_info', 'fpwPluginsInfo');

    function fpw_hook_css() {
        ?><style>
.flexContainer {
	display:flex;
}
.columnLeft,
.columnRight {
	flex:2;
}
.columnRight {
	text-align:right;
}
.columnMiddle {
	flex:3;
}
.columnLeft,
.columnMiddle, 
.columnright {
	line-height: 1.714285714;
}
.button {
    background-color:darkcyan;
    border: none;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 20px 2px;
    cursor: pointer;
    -webkit-transition-duration: 0.4s; /* Safari */
    transition-duration: 0.4s;
}
a.button {
	color:white !important;
}
.button:hover {
    box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);
}
img.pluginIcon {
	padding-bottom:15px;
}
.byAuthor {
    margin-bottom: 1em;
}
</style><?php
    }
    add_action('wp_head', 'fpw_hook_css');
}

Place this file in /wp-content/mu-plugins/ folder. Now you can use it, in you posts/pages, by inserting [fpw-plugins-info author="...author's slug in wordpress.org..." expire="10"]. Both parameters are optional, and will default to - frankpw, and 5, respectively. The expire parameter defines cache expiration in minutes.

Example

[fpw_plugins_info author='xcloner']