I’m not saying I think it’s this cross but it’s interesting there’s so many ancient cross symbols.
#8 Cross Petal
In Church visual art we can often find the crosses with petals. For example, we can see such a cross on the omophorion of Saint Gregory Thaumaturgus, depicted on the mosaics in Saint Sophia's Cathedral in Kiev.
I’m not saying I think it’s this cross but it’s interesting there’s so many ancient cross symbols.
#8 Cross Petal
https://orthochristian.com/97480.html