Looks like a mud trooper honestly. At least similar.

You can see more examples in Battlefront 2, the Flametrooper is a FO Snowtrooper

On 5/4/2019 at 11:32 PM, Imperial Advisor Arem Heshvaun said:

Or officer, from Rise of Skywalker visual dictionary

If I recall, The First order gives capes to troopers of the rank of Captain. Regardless, I like it. I think it would be interesting to use for either a generic commander or squad leader of First Order Stormtroopers if it is indeed a captains cape.

I look forward to this visual dictionary.

First Order keyword: Drip 1: if this unit is chrome or rocking a cape, gain plus 1 clout