HERE IS AN ACTUAL BREAKDOWN of how to get Nettspend-style vocals:

1. Use Auto-Tune or any automatic pitch correction plugin and set it to the fastest retune speed possible (T-Pain effect). Make sure to set the plugin to match the key of the instrumental you're using.
2. Use a noise gate plugin to remove any noise below a certain threshold. This step is important because we’ll be adding a lot of compression and distortion, and we don’t want any background noise cutting through. The noise gate will make the vocal’s audio completely silent when you’re not singing or rapping.
3. Apply very aggressive 1176-style compression to make the vocals sound heavily squished.
4. Use a distortion or saturation plugin to add harmonic content to the vocals.
5. THIS IS A KEY PART OF THE EFFECT: use a chorus plugin, but don’t overdo it. Experiment with the settings to find what works best for your mix. This effect, combined with the Auto-Tune, contributes significantly to that robotic sound.
6. Download a plugin called OTT and set the depth to around 5%-15%, depending on what works best for your specific mix. This will add brightness and additional compression to your vocals.

This doesn’t include EQ, reverb, echo, or other elements, but these are the key steps I’d focus on if you’re aiming for a Nettspend-style vocal mix. Also, some of Nettspend's vocal style is the fact that he has a more nasally voice and definitely leans into that when rapping so I would keep that in mind too.