Segmented Controlですね。Pickerに.segmentedスタイルを指定すると作れます。 https://www.hackingwithswift.com/quick-start/swiftui/how-to-create-a-segmented-control-and-read-values-from-it

How to create a segmented control and read values from it - a free ...

Learn Swift coding for iOS with these free tutorials