miniBB doesn't provide such views by default, but you could code your own PHP index file and use the free
"First page news" add-on, configuring it to the view mode you provide on the 1st screenshot.
The same add-on could be used for the 2nd screenshot, you just need to include it multiple times, sending different parameters.
As about the 3rd screenshot, you could modify default template (
main_posts_cell.html) and probably use the functionality of
parseMessage() function to achieve the view like this. But also note, that miniBB contains a lot administrative links, which also appear on the message thread view. So you will need to make a plan of fitting them into a such simple layout for admin, too.
Also, in bb_plugins.php you would probably need to put some little codes preventing accessing default miniBB views and templates, so they do not duplicate with your own index.