Loyalist/Traitor Legion Equivalents

It seems to me like, of the 9 Loyalist and 9 Traitor First Founding legions, each L/T has sort of a "two sides of the same coin" equivalent (or similar) legion on the other side, either filling a similar role in battle or having some thematic parallel. Some seem very obvious to me, which I have asterisked*, while other's are harder to place, so I wanted to see what y'all think, my pairings are:

Word Bearers ---> Black Templars (fanatical religious devotion)

Iron Warriors --> Imperial Fists (siege vs fortification)*

World Eaters --> Blood Angels (blood, close combat, violent rage)*

Night Lords --> Ravenguard (edgy-emo jump boys)*

1000 Sons --> Space Wolves (wizard/shaman cabals)

Death Guard --> Iron Fists (extensive body modification to overcome weakness)

Sons of Horus/Black Legion --> Ultramarines (the only ones able to get everyone else to team up and have their shit together)

Alpha Legion --> Dark Angels (secret society, mysterious chapters)

Emperor's Children --> Salamanders (great interest in non-astartes, nice out of the goodness of their heart, vs cruelty for the sake of pleasure)