I am thinking that the dragon is probably coloured to homage Snapdragon. And the white alligator is homaging a proposed/unproduced toy for a 1997 Transformers convention (a white redeco of the BW alligator Megatron toy).

The promo material says that the orange tiger is an "unused 90’s color scheme", which isn't true as of the end of last year, with the Golden Disk Tigatron - so even if this toy and promo material were planned before that, they have had 6-9 months to change the wording.
(the wording in the toy reveals goes to great lengths to avoid any Transformers names, terms, or concepts when describing each figure, except the one that is homaging Shattered Glass Soundwave)


Things are already getting nasty with this new convention.
Not only will TFW refuse to post anything on their news page out of spite over the previous convention organisers (TFW post up news about several other fan conventions - they won't even allow people post new BotCon topics in the news section of their board)... but the people who run the TFCon conventions have registered a BotCon website in Canada to convince people that TFCon is the only fan convention on this year in North America, and goes on about the benefits of TFCon. They also note as a disclaimer at the bottom, that the site is "an information resource only and not intended to infringe on any trademarks." I know that BotCon is a registered trademark in America, so it will be interesting to see if a Canadian hosted website that is marketing events within America, can really be claiming that it is not infringing on any trademarks.
Aside from the trademark issue, I think it is a really low act for one Transformers fan convention to try to undermine another Transformers fan convention. It's not a competition, and the conventions need as much support as they can get to be successful and attract support from Hasbro... which will be harder to do if fans are forced to only attend particular conventions and they all suffer in numbers. It will also mean Hasbro will be more likely to keep their distance from all conventions if they see very public nastiness from any of them.
I was a bit on the fence before with TFCon, willing to ignore their focus on promoting 3rd Party toys over the real things, for the benefit of seeing Transformers guests and feeling the atmosphere of a dedicated Transformers convention... but this side of the people running has me not wanting to support them at all now. The new BotCon people didn't appear to have targetted the TFCon convention with their promotions, and this new BotCon is not going to be anything close to being competition to TFCon, so this attempt at drawing people away from BotCon 2022 was very petty and unnecessary, and gives the fandom a bad image.