A lot of good things happen at the moment in Kate’s development. We didn’t only implement plenty of new features for 21.04 and fix a lot of bugs in the last months and year, we did improve our overall product branding, too. Early in 2020, we introduced a new Kate icon designed by Tyson Tan to get some icon that is instantly recognizable compared to the generic ones we used in the past.
Actually Kate does support LSP via plugin: https://kate-editor.org/post/2020/2020-01-01-kate-lsp-client-status/