Hello @AllianceON ,
While it isn't available with the more up-to-date landing page sign up forms, the default legacy landing page in your account can be linked to, and does possess the ability to have several list selections available. To find it in your account, go to Sign-up Forms > Legacy landing pages > then you can use the Actions menu for it to edit, or grab the URL. Generally speaking, if you're going to use this as a quickly linkable "update list preferences," then I'd recommend only having the email address be the required contact field they need to fill in. For visual reference:
Inline forms you've made through us can also potentially be utilized, since they can have multi-list selections. As they require an additional unique code alongside the universal code, you can have one inline form on your website be dedicated to collecting new signups, and an additional one elsewhere on the site dedicated to updating list preferences. Then simply add the applicable update form page to your email as a text, image, or button link.
See also:
Text links
Image links
Button links
... View more