Here a GK list that I've constructed. Though its not a tournament list so sorry to disappoint. However I do have a kill team list that is for competitions and I've found it quite effective.

So here the army list. It add up to 1636 points. Also this is not my final list I'm aiming for just what I've got so far.

HQ:

Castellen Crowe
Brotherhood Champion (customised emperors champion)

Elite:

5 Paladins with a mix of weapons and equipment

Troops:

5 Purifiers with halberds, a Daemon Hammer, and a warding stave
5 Purifiers with Falchions, an incinerator, and a warding stave

Heavy Support:

5 Purgater with psycannons and a warding stave
Dreadknight with incinerator and psycannon

It a fun list to play you should try it at some point.

As for the kill team list its aa five man interceptor squad with 3 Halberd, a pair of falchions and a psycannon. This makes a 195 point team for a game of max 200 points.