@Sarah it’s possible to make manually for your dedicated website. Just visit: https://instantview.telegram.org/, and generate new template.
For example, here is an instant view template for digest - theme posts:
~version: "2.0"
?exists: //meta[@property="og:type"]
!exists: //meta[@content="article"]
body: //article/section[has-class("gh-content")]
title: $body//h1[1]
cover: //figure[has-class("gh-article-image")]