The third track (Lescht) left the strongest impression on me out of all of the tracks. Partly because it feels the most unique out of all 3 tracks, with the shimmering sounds being the best part to me . From there, Baubbles gave a similarly strong impression. Florbulation gave the weakest impression, but I didn't let that bog down this metric.
I'm not very good at judging creativity, but I didn't find it actively cliche nor pushing the envelope (not that it needs to). Florbulation feels very close to what I'd expect from a "retro funky synth" and didn't really stand out creatively to me. However, the other 2 tracks I'd say were creative!
The tracks definitely feel cohesive and like they would be part of the same game (based on vibe). Lescht felt somewhat different from the others, but given that it is meant to be an ending theme (and has the same style of drum/percussion as the previous tracks), I think it fits with the overall collection fairly well.
I'd say my favorite track is Lescht, with Baubbles close behind. Florbulation, with similar reasoning as above for impressions, I would say was my least favorite (relatively) track out of all of them.
I can see how the Baubbles and Lescht fit with the picture theme (and what you were going for), but I'm not so sure on Florbulation, (similar to why I felt that Florbulation didn't stand out too much in terms of creativity). The melody part of Baubbles, after further listening, does feel like it fits an underwater-sort-of vibe. Lescht, with the shimmering synth felt the most "dreamy". Florbulation does indeed feel like music that you'd hear from exploring a town, but I'd say it doesn't fit a dreamy or underwater sort of vibe.