If you want to use in a terminal emulator features that do not exist in any xterm variant and the remote computer does know only xterm, there is no way to do that without installing data into the terminfo database.

Otherwise, there is no need to install anything, you should just set the environment variable TERM in the remote computer to one of the xterm variants and then modern terminal emulators like kitty or ghostty will still work fine, but of course only as long as you use the xterm-compatible subset of their features.