How to get Content Filter lists

I'm not aware of such a setting, I don't think these Admin settings are exposed through freemarker. You could get them with a bit of javascript magic though, but of course you need to be logged in as someone with access to the community Admin, otherwise it won't (or shouldn't) work:

var host = 'https://<your-community-host>';
var list = 'smut'; // <filter-list-name>
var html = (await (await fetch(`${host}/t5/bizapps/page.adminmanagecontentfilters.editfilter:editfilterwords?filter-name=${list}&t:ac=tab/community%3Aadmin%3Amoderatortools%3Acontent-filters&t:cp=admin/contributions/page`, {
  "headers": {
    "accept": "application/json, text/javascript, */*; q=0.01",
    // only needed on staging environments!
    "authorization": "Basic <base64-encoded-htaccess-credentials",
    "cache-control": "no-cache",
    "content-type": "application/x-www-form-urlencoded; charset=UTF-8",
    "lithium-ajax-request": "true",
    "pragma": "no-cache",
    "x-requested-with": "XMLHttpRequest"
  },
  "body": "",
  "method": "POST",
  "mode": "cors",
  "credentials": "include"
})).json()).response?.components?.[0]?.content || '';

var results = [...(new DOMParser()).parseFromString(html, 'text/html').querySelectorAll('td.filteredWordColumn')].map((el) => el.innerText);

console.log(results);

This will return an array of filtered words in that filter-list.