I managed to find a few of them in gif format, but they've got a white background to them

Example:

But when I try to use a background removal tool, it gets all messed up because the eyes of the emojis are also white, so it removes that too

If you just try and save the jsp emoji's as a gif, they aren't animated

would like to get the following emojis (and in a standard disc emoji size) without a background: