What was the highest category of Croix de Guerre in WWI bronze palm or gold palm?

Factual Questions
1

What was the highest category of Croix de Guerre in WWI bronze palm or gold palm? Neither Wikipedia nor Britannica mention it. Is there a Croix de Guerre with a gold palm ?

https://www.smithsonianmag.com/history/remembering-henry-johnson-the-soldier-called-black-death-117386701/
France’s highest military honor. They were the first American privates to receive it. Johnson’s medal included the coveted Gold Palm, for extraordinary valor.

Croix de Guerre - World War I Centennial
The Croix de Guerre was a medal with ribbon that was awarded with degrees based on the actions of the soldier and his role. The lowest degree was signified by the bronze star, while the highest was a bronze palm. Soldiers could receive multiple stars and palms for multiple acts of wartime gallantry. In some instances, whole military units and even French villages were awarded Croix de Guerres.

Johnson sustained 21 wounds in the engagement, and the French military awarded him the Croix de Guerreavec Palme for bravery (he was posthumously awarded the Congressional Medal of Honor in 2015).

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According to The Australian War Memorial

The Croix de Guerre was awarded for bravery to military personnel who were mentioned in dispatches. Recipients of the Légion d’Honneur and Médaille Militaire were automatically entitled to the Croix de Guerre. For subsequent acts of bravery, the recipient was awarded a bronze palm leaf for Army citations, a gold star for Corps citations, a silver star for Division citations or a bronze star for Brigade and Regimental citations.

3

Thanks don_t-ask. Everything I’ve read in French states the same.