Chord Level Selector plugin
Making a quick post to mention that https://musescore.org/en/project/chord-level-selector got an update to include selecting everything of a chord except for top or the bottom (or both). Of course, selecting only top, bottom, both, or levels 2 - 5 will work still. Hope it helps someone out there. And of course, if other problems are found, comments can be posted @ https://musescore.org/en/node/328754
Also just one version works for both 3 and 4.x (but not the keyboard shortcut). At least, it should...