The toys that are referred to as "Authentics" are a puzzling assortment, along the lines of the Cyber Series, with it being a very small assortment of fairly simplistic toys of mostly just the most iconic characters of the Transformers Brand, that end up getting sold in random outlets, making it very difficult to collect any or all.

So far there have been two waves of the larger "Alpha" and smaller "Bravo" toys, with just 4 or 5 in each size so far, along with a single wave of Titan Changers, which had 3 toys so far.
The Alpha and Bravo toys came out in 2018 while the Titan Changers came out in 2019. (we got all but the Titan Changers here in Australia)

Correction - I keep forgetting about the super sized Bumblebee toy that was also produced, making it four size classes overall, but just 13 toys so far released as Authentics.

Official images have now been found of a new wave of each of the three smaller sizes, and like previously, it doesn't include too many new toys...

Alpha size - Soundwave (car similar to Cyberverse)

Beta size - Ratchet (van, similar to the "Energon" mould that FunPub used for a convention toy)

Titan Changer - Grimlock, Starscream (in Gen1 alt-modes)