A low priority is suppose to make the label stretch easily. Changing default priority to 1 using setContentHuggingPriority(UILayoutPriority(1), for: .vertical) not working here:

    cluesLabel = UILabel()
    cluesLabel.translatesAutoresizingMaskIntoConstraints = false
    cluesLabel.font = UIFont.systemFont(ofSize: 24)                                 //gives us the current Apple font
    cluesLabel.text = "CLUES" //placeholder
    cluesLabel.numberOfLines = 0                                                    //how many lines will this text wrap over ~  0 => as many as it takes
    cluesLabel.setContentHuggingPriority(UILayoutPriority(1), for: .vertical)       //Stretch [& Squash] priority setting... Low priority = make it stretch easily
    view.addSubview(cluesLabel)

    answersLabel = UILabel()
    answersLabel.translatesAutoresizingMaskIntoConstraints = false
    answersLabel.font = UIFont.systemFont(ofSize: 24)
    answersLabel.text = "ANSWERS"                                           //placeholder
    answersLabel.textAlignment = .center                                             
    answersLabel.numberOfLines = 0                                         //how many lines will this text wrap over ~  0 => as many as it takes
    answersLabel.setContentHuggingPriority(UILayoutPriority(1), for: .vertical)       //Stretch [& Squash] priority setting... Low priority = make it stretch easily
    view.addSubview(answersLabel)

Very stumped. After seeing identical solutions on github, I am scratching my head as to why my labels don't look like the desired UI... https://youtu.be/yhxhKpyyQzE?t=1808

Maybe a Swift 5.2 issue? Thanks!