I am assuming you will have the common sense to catch some things like what jeckyll and hyde are and have baseline knowledge of Death Note or trust events went as told but I'll establish things here.

Running themes:
White King is a chess reference, a racist/racial reference to white supremacy of the hair of N over L's black hair and a reversal to him wrongly dissing N as albino when N clearly has dark eyes among other things that make clear he isn't albino. It's also an even more subtle backfiring against L's attack on N for mistaking L's ethnicity as non-british when in reality L isn't even a full white man and is only a quarter English while Nate is estimated to be purebred british.

This is a running theme as well a few others.

What you notice is the concept that L is a loser the audience love more yet he actually killed the guy he flexes the most loving him more than the guy loves N (Watari) by several f-ups driven by his ego.

You will also notice a running theme that L was gay to a soppy level for Light. this is displayed in 2 key scenes I can show one involving rain dripping as L accepts his incoming death.

Note this death came at the hands of a female Shinigami Rem, while in contrast Near utilised Ryuk the male Shinigami otherwise most loyal to Light the primary antagonist, to turn on the very antagonist himself (in order to protect the secrecy of the Death Note darker truths and the Shinigami realm as he couldn't have Light turning on him or that realm). Near in other words was the 'c##t' (also known as female genitalia) even a male Shinigami wouldn't f##k with that Rem, the female did indeed F### with.

I'll now give a few scenes just so you fully get what's being referenced but in general I trust your ability to grasp many layered things as they're set up so a variety will catch them. Such as carry-over of L squatting in Round 1 to him squatting on Light's D being a multi-layered diss combining his crush on Light with his ridiculous squatting habit.

I mean this scene encapsulates a lot, it has a timestamp skip but you can watch it all to grasp his crush on Light (this was as he was being killed/checkmated by Light):
https://youtu.be/grwNdXi8z5Q?t=213
https://www.youtube.com/watch?v=_FnlGWGqKAo&t=7s

his addiction to sugar and more are well known tropes one search would tell you.

https://www.youtube.com/shorts/0FdqM1KaEks

His autism is also a well known trope:
https://www.youtube.com/watch?v=IzQ4gtGPcSc&t=193s

In general all of my references are pretty straightforward to catch tbph. I won't overload you with references, if you catch the puns you catch them if not, the flow itself should be admired and the rhyme scheme.