adding multiple classes to element by calling it with classes

hello I need to add multiple classes to element using their classes name

var transpMobile = document.querySelectorAll(".home.tm-header-mobile");
transpMobile.classList.add('tm-header-transparent', 'tm-header-overlay');
var transpMobile2 = document.querySelectorAll(".home.uk-navbar-container");
transpMobile2.classList.add('uk-navbar-transparent', 'uk-light');

someone say use this

    for (const elm of transpMobile) {
  elm.classList.add(...);
}

but I dont know what to declare my variblaes.