I came across this article and found it useful. I’m not a very competitive player myself, nor am I really excellent at list building so there are some great tips in here that I know I need to apply. Since the writer Andrew, has multiple GT wins under his belt and I have a trophy for ‘Best Sportsman’ I figured he’d be a good source for information on how to make a list competitive. Enjoy!
https://beastcoastgaming.com/competitive-list-building/