HubSpot migrated the entire HubSpot Bootstrap 5 Theme folder into your account. Go to Marketing > Files and Templates > Design Tools > @marketplace > Jordan Heatwole > HubSpot Bootstrap 5 Theme to find everything you need.
To allow the most flexibility, both the landing page template and the webpage template come with simply a header, footer, and an empty drag and drop section. You can build your page out any way you'd like using the theme modules/sections, HubSpot's modules, and HubSpot's default column and row capabilities. The blog index template does include the blog listing and pagination modules by default, and the blog post template is pre-configured to include breadcrumbs, a date and time stamp, the author, social sharing links, a featured image, body content, a sticky subscription box, and three related posts.