I was helping at a school do where I saw a number of kids sign their names in quick succession and the majority held their pens in very varied ways, some almost clenched in a fist.
When I was at school we had a classic pen hold with thumb and index finger holding the pen against the first knuckle of the the middle finger.
My dd has a slightly odd variation on that but it still looks traditional. But these kids were holding their pens in such extreme ways and they looked so awkward and unsuited to writing.
Did schools stop teaching handwriting holds at some point? It’s the pen in a fist which looks so crazy to me with my lens from the past!