Thanks for reaching out.
You can utilize the combination of global block, dynamic content feature, and block grid.
First, please check this about the global block https://theme.co/apex/forum/t/global-blocks/24723 and dynamic content feature https://theme.co/changelog/ ( Dynamic Content ).
Simply create your post item in global block at a time and apply the dynamic content like title, content, and so on coming from portfolio post type.
The 92 is the post ID of the portfolio page. Please check this for getting the post ID https://theme.co/apex/forum/t/setup-how-to-locate-post-ids/59, but this time, check from portfolio section. These screenshots are also taken from text element, other elements like buttons and should work the same.
Then simply copy the shortcode of that global block within your block grid item content.