I've also mentioned in the past that I use the visual recognition that comes from filling my display cases:
I actually just added these 2 models to the case. The first one is Balor from the 5th Squad of the 5th Company. He actually was in White Dwarf like 2 years ago in a Grand Tournament spread but in my head he wasn't finished. He was still awaiting his chapter symbol and script on the skeleton's parchment. The second is Heletiv, who just replaced one of my most outdated models from the 1st Squad of the 5th Company (which was painted over 10 years ago and really isn't up to my current standards.) Don't ask me where I pulled that name from but that's what was written under his base:
I've talked a lot about how I do things but this kind of shows the method AND the madness of how I approach painting an army - and possibly why its taken me over a decade to get this far.