Customizable Sitemap

I’ve been looking for a customizable sitemap plugin for my WP site but haven’t been able to find what I’m looking for. I’m looking for a clean and simply designed sitemap that allows me to customize which pages and posts show up on the map. I run an ecommerce clothing site and have lots of sales landing pages and thank you pages that display on the sitemap, whereas I don’t want people clicking on those links or even google indexing those pages for that matter. Is it possible to allow some posts to show on the sitemap and some to remain hidden?

Thank you in advance for the help!