More than the missing details in the specs, what's bothering us is the suggested model names. We don't have a Galaxy Y or C series phone in the market today. A few years back, Samsung had phones like the Galaxy C8, C9, etc. However, they have been discontinued for a long time now. Similarly, there was once the Galaxy Y Pro and Y Duos and it's been years since we last seen a Y-series phone from Samsung.
On a different note, many of these specifications seem similar to that of the rumoured Samsung Galaxy A35. This phone is also said to have a 6.6-inch AMOLED display with FHD+ resolution, 50+8+2MP triplet, and a 5,000mAh battery. We have also seen its alleged renders and the vertical rear camera stack as well as the punch-hole display match the description of the aforementioned SM-C5560 handset.
Let's wait for more concrete specifics and in the meantime, it is better to take the Samsung phone names and other details with a pinch of salt.