It's impossible for me to numerically rank iems when they all do different things as well as needing to take synergies into consideration.Just took a look at your "IEM spreadsheet"...nice idea and layout. I may set one of those up myself when I have time over the holidays.
I also avoided "tier"-ing them because I priotize tuning just as much as technicality to experience enjoyment.
Which is why I decided to just check list what I "enjoyed" and what I really enjoyed, because enjoyment is subjective to each individual's preference

Hoping to see your iem spreadsheet too!
You've probably heard countless number of iems that's too many to count haha