lefteris
Hi "lefteris", as on Apache or on NGINX and also for OpenLiteSpeed all the parameters relating to its configuration must be persistent there is no classification of more or less important precisely because it is the very nature of Web Servers regardless of whether Apache, NGINX, OpenLiteSpeed or LiteSpeed Enterprise which requires them to be configurable, because there is no standard configuration that can suit 99% of users, as the needs of each of us are different and always continue to change with the passage of time, that's all.
I have used NGINX for years and I was happy with it but for several years I have only used OpenLiteSpeed or, when I can't do without it, LiteSpeed Enterprise (which is the paid and commercial version of OpenLiteSpeed) and I consider OpenLiteSpeed much better in terms of performance compared to NGINX and I also consider it very safe, however by searching for information on Google and trying it yourself you will be able to form your own opinion.