The designer portfolio
Three to six pieces of work, each with its own page. The proof section is most of the site and the offer is small, because the work is doing the selling.
Pages: home, one per project, about, contact. The section that decides it: proof. Every case study opens with what was wrong before you started, or it is a slideshow.
The freelance service site
Different from a portfolio, and people conflate them constantly. This one sells a specific service to a specific buyer. The offer and the objection sections carry the page.
Pages: home, services, work, contact. The section that decides it: the objection. Say what it costs or how pricing works, and whether you are taking work this month.
The product landing page
One page, one thing to sell, one action. The opening does the heavy lifting because most visitors leave from it.
Pages: one, plus a privacy page and terms if you take payments. The section that decides it: the opening. Name the problem in the first line rather than the product.
The small studio site
A portfolio with a business attached. It has to work for a client deciding whether to email, and for a designer deciding whether to apply.
Pages: home, work, one per project, studio, contact. The section that decides it: proof, but named. Clients want to know who you have worked with, not only what you made.
The launch or event page
A date, a thing happening, and one action. It has a deadline, which makes it the easiest kind of site to finish and the easiest to leave stale afterwards.
Pages: one, sometimes two. The section that decides it: the way in. Signup, tickets or a calendar link, above the fold and repeated at the bottom.
The local business one-pager
What it is, where it is, when it is open, how to get in touch. Most visitors arrive on a phone looking for one of those four facts.
Pages: one. The section that decides it: the way in. The address, the hours and the phone number, all copyable, all near the top.