Bottom right looks the worst which is ironically the way we’ve been using it lately
As a standalone little image like it is there maybe, but I disagree it is the worst when actually on a jersey.
I like the lighter blue as a jersey colour and I also like that the logo stands out well against it still, without the white outline sharply contrasting.
To me the logo on black becomes a bit cluttered by the sharply contrasting white outline. I also think for same blue background, while it is still okay, it gets lost a bit. Would be pretty hard to notice from any real distance on a players jersey.
Rabbitohs logo it all quite simple shapes so easier to play around with - we could cut the 'extra' stuff on ours like they do at times and just have the shark shape (no shield, no writing).