KDE
Cursors – for your chosen cursor theme to be used in SDDM and also the EOS apps under Wayland, you need to edit ~/.icons/default/index.theme - see here KDE Wayland issues with the EndeavourOS apps - #6 by joekamprad
KDE Connect is installed as part of KDE Plasma in EndeavourOS, together with the firewalld firewall. To allow KDE Connect to pair with your phone, see the information from the KDE UserBase Wiki here - https://userbase.kde.org/KDEConnect#firewalld