DynamicHeightTableView.swift

public class DynamicHeightTableView: UITableView {
    public var maxHeight: CGFloat = UIScreen.main.bounds.height
    
    override public var contentSize: CGSize {
        didSet {
            self.invalidateIntrinsicContentSize()
        }
    }
    
    override public func reloadData() {
        super.reloadData()
        self.invalidateIntrinsicContentSize()
    }
    
    override public var intrinsicContentSize: CGSize {
        super.layoutIfNeeded()
        let height = min(contentSize.height, maxHeight)
        return CGSize(width: contentSize.width, height: height)
    }
}

import UIKit

final class ContentSizedTableView: UITableView {
    override var contentSize:CGSize {
        didSet {
            invalidateIntrinsicContentSize()
        }
    }

    override var intrinsicContentSize: CGSize {
        layoutIfNeeded()
        return CGSize(width: UIView.noIntrinsicMetric, height: contentSize.height)
    }
}