Silhouettes discussion

In the latest corocoro issue 5 silhouettes were shown. When the text under and beside.yhem is translated it says that they are all under development. What do you think they could be.
I don't think this needs a thread, little information is confirmed since these are technically upcoming releases and rumoured to be certain beyblades, so until then please use this thread:

https://worldbeyblade.org/Thread-Burst-U...pid1448151