Most of the Uncorrupted weren’t shown despite having designs. The Jaspers were, including the Fusion, as well as Watermelon, Snowflake, and Larimar. Larimar actually has three designs: the artbook, CYM, and Future.
The bird Gem didn’t get named in the artbook, but does indeed look like a Pearl. An Offcolor one with deformed limb shapes unsuited to being a ballerina-type.
Interestingly, Watermelon and Crazy Lace are both Fusions who remained together despite Corruption and during Uncorruption.
People point out that it seems White Topaz would have had a cut plot. She’s the only white Gem we see (Pearl is a rainbow of all four), her Corrupted form was unlike any other Monster, and her artbook entry for being Uncorrupted has her still angry about something which given how Lars repeatedly betraying Ronaldo made her go berserk implies she has a grudge still.