QuickSight Migration to another AWS Account

The range of possible data sources for QuickSights is very wide: see https://docs.aws.amazon.com/quicksight/latest/user/supported-data-sources.html

So, can you detail which ones you need to migrate?

Hi, Thanks for your reply. I'm not talking about data sources, I need to migrate existing QuickSight datasets, analyses and dashboards to another AWS account in the fastest way. I know you can use AWS CLI, prepare Json file etc, but it's not an easy way.

You can use the API, this blog post shows how to migrate from one account to another. The example used dev to prod but the concept is the same. You can also follow this video that walks you step by step.