I've been using Notion (https://www.notion.so/) for Kanban-style boards for a few months. After using Trello, Asana, and Jira, it's the only one that does basically what I want it to without spending hours on setup (Jira) or sheer annoyance (Asana). It won't be perfect for everyone, but for me Notion's task management is good enough and actually a pleasure to use so far.
Notion is great. It gives you so much flexibility to really mold the software into what you need, I would highly recommend it. As freelancer I use it as a Jira replacement but I also have personal to-do lists, etc. in Notion and it’s nice having them all in one place.