Made by Chuck Grimmett using the following materials: Cover block, Group block, Spacer block.
<!-- wp:cover {"gradient":"diagonal-secondary-to-background","isDark":false,"align":"wide","style":{"color":{"duotone":["#000000","#ffffff"]},"spacing":{"padding":{"top":"50px","right":"50px","bottom":"50px","left":"50px"}}}} -->
<div class="wp-block-cover alignwide is-light" style="padding-top:50px;padding-right:50px;padding-bottom:50px;padding-left:50px"><span aria-hidden="true" class="wp-block-cover__background has-background-dim-100 has-background-dim has-background-gradient has-diagonal-secondary-to-background-gradient-background"></span><div class="wp-block-cover__inner-container"><!-- wp:group {"gradient":"diagonal-background-to-secondary"} -->
<div class="wp-block-group has-diagonal-background-to-secondary-gradient-background has-background"><!-- wp:group {"gradient":"diagonal-secondary-to-background"} -->
<div class="wp-block-group has-diagonal-secondary-to-background-gradient-background has-background"><!-- wp:group {"gradient":"diagonal-background-to-secondary"} -->
<div class="wp-block-group has-diagonal-background-to-secondary-gradient-background has-background"><!-- wp:group {"gradient":"diagonal-secondary-to-background"} -->
<div class="wp-block-group has-diagonal-secondary-to-background-gradient-background has-background"><!-- wp:group {"gradient":"diagonal-background-to-secondary"} -->
<div class="wp-block-group has-diagonal-background-to-secondary-gradient-background has-background"><!-- wp:spacer {"height":"500px"} -->
<div style="height:500px" aria-hidden="true" class="wp-block-spacer"></div>
<!-- /wp:spacer --></div>
<!-- /wp:group --></div>
<!-- /wp:group --></div>
<!-- /wp:group --></div>
<!-- /wp:group --></div>
<!-- /wp:group --></div></div>
<!-- /wp:cover -->