Affordance

This plugin automatically shows the theme customizer after it was removed in WordPress 5.9.

Show Customizer

Activate this to show the theme customizer in block themes.

Lincoln Mahmud

Coders Time Team

Site-settings is an official plugin maintained by the Coderstime team that adds an extra feature on the “Settings” option on the admin dashboard. It makes it possible to use plugins that extend that screen, add clean meta boxes.
Site Settings is an official Coderstime plugin, and will be fully supported and maintained until at least 2022, or as long as is necessary.
At a glance, this plugin adds the following:
Administrators can make the default changes for all users. The form includes the change in the site’s logo, title, tagline, email, phone, address, copyrighted text along with the change in the social media links that are to be posted in the website. 
When allowed, the plugin will ask for information to change and once the changes are submitted, there will be a confirmation box to alert the admin. Only admin will have the privilege to make all the necessary changes. 
Each post opens in the last editor used regardless of who edited it last. This is important for maintaining a consistent experience when editing content.
By default, this plugin hides all functionality available in the new block editor (“Gutenberg”).
<h3>Usage</h3>
to get site Logo url just use this shortcode
<pre><code> [ss_option size="full"]site_logo[/ss_option]
</code></pre>
to show site name just use this shortcode
<pre><code> [ss_option]blogname[/ss_option]
</code></pre>
to show site Description just use this shortcode
<pre><code> [ss_option]blogdescription[/ss_option]
</code></pre>
to show site Email just use this shortcode
<pre><code> [ss_option]site_email[/ss_option]
</code></pre>
to show site Phone just use this shortcode
<pre><code> [ss_option]site_phone[/ss_option]
</code></pre>
to show site Address just use this shortcode
<pre><code> [ss_option]site_address[/ss_option]
</code></pre>
to show Site Tags just use this shortcode
<pre><code> [ss_option]site_tags[/ss_option]
</code></pre>
to show Site Tags with tag link just use this shortcode
<pre><code> [ss_option link="true"]site_tags[/ss_option]
</code></pre>
to show Site Facebook link just use this shortcode
<pre><code> [ss_option]site_facebook[/ss_option]
</code></pre>
to show Site Twitter link just use this shortcode
<pre><code> [ss_option]site_twitter[/ss_option]
</code></pre>
to show Site Instagram link just use this shortcode
<pre><code> [ss_option]site_instagram[/ss_option]
</code></pre>
to show Site Youtube link just use this shortcode
<pre><code> [ss_option]site_youtube[/ss_option]
</code></pre>
<h3>Don’t Know Shortcode ?</h3>
<a href="https://developer.wordpress.org/reference/functions/do_shortcode/" rel="nofollow ugc">WordPress Shortcode</a>

Site-settings

It's very basic plugin, helps me to start with this. It's very simple to basic information save and show in my theme.

Excellent plugin

Site-settings is the ultimate plugin for making all the necessary changes in the custom fields of a website.

Show Customizer vs Site-settings