Project Idea - looking for a Chapter

Here is my latest idea. Take my left overs, Make an army, Possibly sell as lot afterwards.

Trying to find a chapter. Suggestions would be good

Here's the Army List

Codex: Space Marines - 2000 Points

Captain - Relic Blade

Librarian - Avenger, Gate of intinity

Dreadnought - Multi melta, CCW, Heavy Flamer

Dreadnought - Multi melta, CCW, Heavy Flamer

Dreadnought - Plasma Cannon, CCW, Heavy Flamer

Tactical Squad - Power Fist, Plasma Gun, Plasma Cannon

Tactical Squad - Power Fist, Plasma Gun, Heavy Bolter

Tactical Squad - Power Fist, Melta Gun, Multi Melta

5 Scout - Power Fist

5 Scout - Power Fist

5 Scout - 4 x Snipers, 1 Heavy Bolter

5 Assault Marines - Power Fist

5 Assault Marines - Power Fist

Vindicator

5 Devastators - 4 Missile Launchers

Now the tricky bit. I already have Red Marines (Khorne), Green Marines(Nurgle), Blue Marines (Space Wolves), Black Marines (Chaos). So Those are out, I want this army to stand out from the rest. Imperial fists are also out due to a friend of mine already using them.

This is basically slapped together with what I have lying around so little inflexible in the list

So Give me a chapter name.