Over/Under Expanded Nozzles at Different Altitudes

[KSPACE]

Currently in-game there are examples of over-expanded nozzles when throttled down/up. Yet this doesn't include engines with under-expanded nozzles or overal change at higher altitudes/different planetary bodies.

Examples of over-expanded and under-expanded nozzles: 

(Credibility: Huzel, D. K. & Huang, D. H. (1971). NASA SP-125, Design of Liquid Propellant Rocket Engines)

                                                 

Edited February 2, 2019 by KSPACE
confusion

[lobe]

It's been a couple weeks since I've played but I think they have it as a result of the plume getting smaller the higher the pressure the surrounding air is. 

[KSPACE]

5 minutes ago, lobe said:

It's been a couple weeks since I've played but I think they have it as a result of the plume getting smaller the higher the pressure the surrounding air is. 

Sorry, I revised the topic, meaning your response became less relevant even if being entirely true.