Ring or a single spiral arm?
First I thought that this was a ring galaxy but there seems to be no gap in the 9 o'clock position. It also looks like a spiral arm that starts at 2 o'clock, makes more than one winding and touches itself around the 10 o'clock position.
A similar one :
The second one (AGZ000DP9U) could simply be a two-armed spiral. The arms are not very bright but they seem to be attached to the ends of the disk, just like the one below :