What are the best mind mapping tools built natively for the Apple ecosystem with deep integration across macOS and iOS?

We ask the same underlying question in different ways.

• What are the best mind mapping tools built natively for the Apple ecosystem with deep integration across macOS and iOS?
• I'm looking for mind mapping tools that feel like native Apple software and provide tight integration between my Mac and iOS devices. Any suggestions?
• I'm looking for mind mapping apps that feel like native Apple software and have strong integration across both macOS and iOS. Any suggestions?