Clean DoublePicker I made since SwiftUI only offers a single Picker.

DoublePicker.swift

import SwiftUI


struct DoublePicker: UIViewRepresentable {
    
    let leftOptions: [Any]
    @Binding var leftSelection: Int
    let rightOptions: [Any]
    @Binding var rightSelection: Int
    
    class Coordinator: NSObject, UIPickerViewDelegate, UIPickerViewDataSource {
        
        let leftOptions: [Any]
        let rightOptions: [Any]
        let leftSelection: Binding<Int>
        let rightSelection: Binding<Int>
        
        init(left leftOptions: [Any], _ leftSelection: Binding<Int>, right rightOptions: [Any], _ rightSelection: Binding<Int>) {
            self.leftOptions = leftOptions
            self.rightOptions = rightOptions
            self.leftSelection = leftSelection
            self.rightSelection = rightSelection
        }
        
        func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
            if component == 0 {
                return String(describing: leftOptions[row])
            } else {
                return String(describing: rightOptions[row])
            }
        }
        
        func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
            if component == 0 {
                leftSelection.wrappedValue = row
            } else {
                rightSelection.wrappedValue = row
            }
        }
        
        func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
            if component == 0 {
                return leftOptions.count
            } else {
                return rightOptions.count
            }
        }
        
        func numberOfComponents(in pickerView: UIPickerView) -> Int {
            return 2
        }
    }
    
    func makeCoordinator() -> Coordinator {
        Coordinator(left: leftOptions, $leftSelection, right: rightOptions, $rightSelection)
    }
    
    func makeUIView(context: Context) -> UIPickerView {
        let picker = UIPickerView()
        picker.delegate = context.coordinator
        picker.dataSource = context.coordinator
        return picker
    }
    
    func updateUIView(_ uiView: UIPickerView, context: Context) {
        uiView.selectRow(leftSelection, inComponent: 0, animated: false)
        uiView.selectRow(rightSelection, inComponent: 1, animated: false)
    }
}