Enterprise is the same as Pro except for some added crap for domain networking. LTSC in totally different and dramatically less bloated. IoT has a longer service window than LTSC if you care about updates. Rebloating to play games is only necessary if you play games that are trash-dependent, like crap from Micro$lop Game Studios. Enterprise (non-LTSC) has all of the same bloat you find in Pro already baked in. No difference in terms of bloat between the two.
Server performs the same as W10 and W11 IoT LTSC overall. W11 Pro starts to show its bloat a little bit in terms of CPU overhead, but still so close between the three that I don't think it warrants the effort of a clean install for the sake of performance gains because the results are within a normal margin of error. If one needed to do a clean install for other reasons (cancer updates, corruption, malware, etc.) then IoT LTSC is still probably the best option. There is less trash in IoT LTSC to deal with. Server is similar, but has other added nonsense that has to be disabled (like Server Manager loading at startup).
At the end of the day none of them are particularly good OSes and there are no dramatic differences. W11 Pro is the slowest OS of all due to the payload of filth and product regressions in general. We already knew that, so no surprise. Unfortunately, I do not have W11 IoT LTSC installed on this system, but that is probably good for the average user in terms of this comparison since it highlights the dumpster fire better.
Here are some additional photos with just ordinary gamerboy PBO overclocking (thus lower Cinebench scores and higher CPU-Z single thread scores) versus manual overclocking. Using PBO is probably a better way to compare them since you are leaving the OS to impose its will on hardware versus hardware imposing its will on Windoze.
Here are the same images before that you could not see for some reason. The drive tested is the W10 OS drive so take that into consideration on the write speeds.