Where does “Ahmadist” come from?

Ahmadist (English) comes from English Ahmad, from Arabic أَحْمَد, from Classical Persian جَان, from Middle Persian 𐫃𐫏𐫀𐫗, from Proto-Iranian *wyaHnáH, from Proto-Indo-Iranian wyaHnás, from Proto-Indo-European h₂enh₁‑ — to breathe.

Ancestry of “Ahmadist”, step by step

Step	Language	Word	Meaning
1	English	Ahmad	—
2	Arabic	أَحْمَد	Ahmed
3	Classical Persian	جَان	—
4	Middle Persian	𐫃𐫏𐫀𐫗	—
5	Proto-Iranian	*wyaHnáH	—
6	Proto-Indo-Iranian	wyaHnás	—
7	Proto-Indo-European	h₂enh₁‑	to breathe

Every word from Proto-Indo-European h₂enh₁‑ →Every word from Proto-Indo-Iranian wyaHnás →Every word from Proto-Iranian *wyaHnáH →