JSFiddle - React, Tailwind, and code Playground

HTML

<div class="tier">
        <p class="title">Tier 1</p>
        <p>This is the Tier 1 item</p>
    </div>
    <div class="tier">
        <p class="title">Tier 2</p>
        <p>This is the Tier 2 item</p>
        <p class="delete">Delete Me</p>
    </div>
    <div class="tier">
        <p class="title">Tier 3</p>
        <p>This is the Tier 3 item</p>
        <p class="delete">Delete Me</p>
    </div>

JavaScript

$(function() {
       $(".delete").bind("click", function() { 
           $(this).parent().remove();
           $(".tier").each( function(index) {
               var tierIndex = index+1;
               $(this).find(".title").text("Tier " + tierIndex);
           });
       });
    });