You can just call HTMLElement.click() on everyelement to simulate the click on every element. You can read more about it here: https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/click
buttonAll.addEventListener('click', ()=> {
nameButton.click();
balanceButton.click();
ageButton.click();
documentButton.click();
levelButton.click();
buttonClear.click();
})
if the list can grow then you might want to group the elements in an array to keep the function short
let buttonAllTargets = [
nameButton,
balanceButton,
ageButton,
documentButton,
levelButton,
buttonClear
];
buttonAllTargets.forEach(element => element.click());
buttonAll.addEventListener('click', ()=> {
buttonAllTargets.forEach(element => element.click());
})