Qie Lei

In the default Gutenberg visual editor, multiple spaces you enter are often “merged” and cannot be seen. This plugin solves this problem by converting consecutive spaces to HTML   entities, preserving the visual spacing.
Features: 
– Converts second and subsequent spaces in a sequence to   entities 
– First space remains a regular space (Gutenberg default behavior) 
– Works anywhere in the content, not just at paragraph starts 
– Option to apply to all content or only new content 
– Preserves spaces within pre/code blocks
<ul>
<li>Author’s blog: https://www.qielei.com</li>
<li>Improvement suggestions or problem feedback: qielei@gmail.com</li>
</ul>

Real Editor Space

Preserves real spaces in WordPress Gutenberg editor by converting multiple spaces to   entities.

biscuitbaby

KBSP Spacer & Ad Blocks lets you easily insert preset blank spaces (1 or 2 lines) and a single ad placeholder (banner1) into your posts and pages. 
It works with both the Classic Editor and the Block Editor.
In the free version you can use the following: 
* Blank spaces with 1 or 2 line presets. 
* One ad placeholder block.
A Pro version offers additional features such as custom heights and multiple ad placeholders. 
Get the Pro version at: https://biscuitbaby.gumroad.com/l/blankblockpro?wanted=true
<h3>Blocks</h3>
This plugin provides 2 blocks.
<ul>
<li>Blank Space </li>
<li>Ad Placeholder</li>
</ul>
<h3>Upgrade</h3>
Want more features? 
The Pro version includes custom spacing heights and multiple ad placeholders. 
Available here: https://biscuitbaby.gumroad.com/l/blankblockpro?wanted=true

KBSP Spacer & Ad Blocks

Easily insert customizable blank spaces and ad placeholders into your posts and pages.

Real Editor Space vs KBSP Spacer & Ad Blocks