Ubuntu Studio and Kubuntu are both KDE-based distros, and KDE now groups all of the configuration into a single application, which is searchable. Having a central location for the settings doesn’t come with any real disadvantages. The configuration tools cover all the common areas of the interface along with system settings in areas such as network setup. The various settings show up in the launcher’s search results as well.
LXQt-based Lubuntu groups the settings together in the LXQt Settings app, but there are settings applets that exist outside of this, meaning that the entire collection isn’t searchable. One way or another, it should be possible to alter any system or appearance settings that you need to, even if the tools are neither fully integrated nor consistent in appearance like the KDE ones.
The settings for Edubuntu can be accessed in two ways. Firstly, Gnome’s Settings app gathers all settings in one place, and it’s searchable. All the settings pages are also present in Gnome’s search-based launcher. So, if you searched for ‘resolution’ in the launcher, it would list Display Settings and launching that from the list would launch the Settings app open on the correct tab.