There are many online tools for the purpose of tracking initiative order in Dungeons & Dragons, but they all suffer from the same problem in my opinion; the fact that you have to input the PCs’ and Monsters’ stats into them. Some tools allow you to just load them directly from a list of Monsters or save your PCs for reuse but it’s still a slow process I think.
So what I did was make a simple pdf that you can print, laminate and write on with dry-erase markers to track initiative for your D&D 5e game.
You can download DMsJourney’s Initiative tracker here.