Salesforce ships a Kanban view in list views, but not inside screen flows. Here are your real options, side by side.
Move records between columns without leaving the flow.
Build the columns from any field you pick, configured in the builder.
Give each card its own actions, configured without code.
Drop a card and the flow gets the record and its new stage.
Summarize a field per column, with card counts at a glance.
Avatars, images, and the fields you pick on every card.
Paths 2 and 3, side by side. A custom flow screen component is a Lightning Web Component you build and maintain yourself.
Use the Kanban view in list views. It works, but your user steps out of the guided process to reach it.
A custom Lightning Web Component you write, test, and deploy. This is the native way to stay in the flow.
Installed from AppExchange, configured in the builder, live inside your flow. No code.
Install from AppExchange and start free with 10 licenses.