Initializer overloads to make working with labels easier.

Components+Label.swift

import SwiftUI

extension Toggle where Label == SwiftUI.Label<Text, Image> {
  public init(_ titleKey: LocalizedStringKey, systemImage named: String, isOn: Binding<Bool>) {
    self.init(isOn: isOn, label: { Label(titleKey, systemImage: named) })
  }

  public init(_ titleKey: LocalizedStringKey, image named: String, isOn: Binding<Bool>) {
    self.init(isOn: isOn, label: { Label(titleKey, image: named) })
  }

  public init<S>(_ title: S, systemImage named: String, isOn: Binding<Bool>) where S: StringProtocol {
    self.init(isOn: isOn, label: { Label(title, systemImage: named) })
  }

  public init<S>(_ title: S, image named: String, isOn: Binding<Bool>) where S: StringProtocol {
    self.init(isOn: isOn, label: { Label(title, image: named) })
  }
}

extension Button where Label == SwiftUI.Label<Text, Image> {
  public init(_ titleKey: LocalizedStringKey, systemImage named: String, action: @escaping () -> Void) {
    self.init(action: action, label: { Label(titleKey, systemImage: named) })
  }

  public init(_ titleKey: LocalizedStringKey, image named: String, action: @escaping () -> Void) {
    self.init(action: action, label: { Label(titleKey, image: named) })
  }

  public init<S>(_ title: S, systemImage named: String, action: @escaping () -> Void) where S : StringProtocol {
    self.init(action: action, label: { Label(title, systemImage: named) })
  }

  public init<S>(_ title: S, image named: String, action: @escaping () -> Void) where S : StringProtocol {
    self.init(action: action, label: { Label(title, image: named) })
  }
}

extension Picker where Label == SwiftUI.Label<Text, Image> {
  public init(_ titleKey: LocalizedStringKey, systemImage named: String, selection: Binding<SelectionValue>, @ViewBuilder content: () -> Content) {
    self.init(selection: selection, content: content, label: { Label(titleKey, systemImage: named) })
  }

  public init(_ titleKey: LocalizedStringKey, image named: String, selection: Binding<SelectionValue>, @ViewBuilder content: () -> Content) {
    self.init(selection: selection, content: content, label: { Label(titleKey, image: named) })
  }

  public init<S>(_ title: S, systemImage named: String, selection: Binding<SelectionValue>, @ViewBuilder content: () -> Content) where S : StringProtocol {
    self.init(selection: selection, content: content, label: { Label(title, systemImage: named) })
  }

  public init<S>(_ title: S, image named: String, selection: Binding<SelectionValue>, @ViewBuilder content: () -> Content) where S : StringProtocol {
    self.init(selection: selection, content: content, label: { Label(title, image: named) })
  }
}

You can also do this if you want even more control:

extension Toggle {
  public init<Title: View, Icon: View>(@ViewBuilder title: () -> Title, @ViewBuilder icon: () -> Icon, isOn: Binding<Bool>) where Label == SwiftUI.Label<Title, Icon> {
    self.init(isOn: isOn, label: { SwiftUI.Label(title: title, icon: icon) })
  }

  public init<Title: View, Icon: View>(title: Title, icon: Icon, isOn: Binding<Bool>) where Label == SwiftUI.Label<Title, Icon> {
    self.init(isOn: isOn, label: { SwiftUI.Label(title: { title }, icon: { icon }) })
  }
}