I was trying to put together Moondrop JIU comparison with LinLong, Hexa, KZ ESX and Droplet.

Well, in two words - they are all different

, and nicely so.
I realized that to make any really proper comparison - so many hours are needed working across the genres and also taking time to adapting the ears from one sound signature to another. So one can really appreciate the hard work of good diligent reviewers (and have a stronger opinion on those making "review production factories").
Anyhow,
JIU is nicely average (in the good/best sense) and great for $25 with the source, case, good tips and most acceptable (to my limited critical senses) those "obligatory" cartoon girl images.
Linlong is the easiest to listen to and enjoyable. Great least tangling and most practical fixed cable compared to JIU and Droplet. A winner for the price/enjoyment, undoubtedly. No sub bass of the microdriver is to note
Hola - a winner for tuning, bass and mids in the budget category. Not treble. Incorporating Hexa treble would command at least a zero to the right of the price tag (perhaps, a next Truthear IEM...).
ESX are woody/meaty, very enjoyable to me as a flavour, more pale in direct comparisons. A winner in the build - most aesthetically pleasing and technically accomplished (three different metal accents in the shell plate, and great transparency and durability of polycarbonate) by far!
Droplet are a great effort in enabling a single BA to sound great, squeezing last/every proverbial droplet out if it and a win there for the Moondrop. Smallest, lightest, a beautiful shape, and capable enough to serve as an only IEM pair
Overall looser: Truthear
Hexa - with all the amazingly resolving mids and treble - not much fun at all to my ears (I was exactly getting Hexa for its analytical signature - the results surpassed all expectations there, so no complains, just a surprise, and an honourable place as a highly specific/specialized IEM in my collection).
Overall winner: my good old modified ASX, putting them back after these comparisons was a pure bliss - ample lush BA bass and potent spicy treble