Link to full Office Hours Demo
At the Jenkins X Office Hours, in september 2020, I did a demo of the new UI for Jenkins X Pipelines that we wrote at Dailymotion, and then shared as open-source with the Jenkins X community.
You can read more about it in the following Jenkins X blog post: New UI to visualize your pipelines and logs - or check out the github repository.
Update: there was a more recent blog post on New features in the pipelines visualizer UI.
And of course you can watch the demo on youtube: