vcomplete.el
Hi, Prot
I just came across a mct-like project and I guess you might be interested in it. I played a bit around it in my environment (emacs28 and arch) and I found it very interesting. It uses an overlay rather than the cursor moving in the completion-list buffer, just like ivy and vertico etc, such that you can continue type in the minibuffer, while you can still move your cursor to the completion buffer if you want.