Customerpaymentmethods.js

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js"></script>

<script>
    var obs = new MutationObserver(function(mutations, observer) {
      $.each(mutations, function(i, mutation) {
        var addedNodes = $(mutation.addedNodes);
        var selector = "form, .checkout-step-info";
        var filteredEls = addedNodes.find(selector).addBack(selector);
        filteredEls.each(function() {
          //get customer and adjust payment methods
          let customerData = JSON.parse({{customer}});
          console.log(customerData);
		//add logic based on a customer attribute of your chossing
		payment(customerData)
        });
      });
    });
const config = { childList: true, subtree: true };

function addObserverIfDesiredNodeAvailable() {
    var composeBox = document.querySelectorAll(".checkout-step--shipping")[0];
    if(!composeBox) {
        //The node we need does not exist yet.  //Wait 500ms and try again
        window.setTimeout(addObserverIfDesiredNodeAvailable,500);
        return;
    }
    obs.observe($(".checkout-step--shipping")[0], config);
}

function payment(){
	if(customerGroup !== '2') {
		document.getElementById('radio-moneyorder').type = 'hidden';
	}
	else {
		document.getElementById('radio-moneyorder').type = 'visible';
	}
}


addObserverIfDesiredNodeAvailable();


</script>