Add a couple Outliner capability features to Obsidian's native list handling: Hotkey to select all text in current bullet, select all children bullets, select entire line of non list item text.

obsidian.templater.operation.outliner.select-list-items.js

<%*
const editor = app.workspace.activeLeaf.view.editor;
const getCurSelection = editor.getSelection();
const getCur = editor.getCursor("from");
const curLineNo = getCur.line;
const curLineText = editor.getLine(curLineNo);
const matchBullet = curLineText.match(/^[ \t]*[-\*] (.*)/);
let foundContent = "";
if(matchBullet) {
    foundContent = matchBullet[1];
}
if(!foundContent) {
    // Not a list item, so just select the entire line
    const multiSelect = editor.listSelections();
    const startLine = editor.getCursor("from").line;
    const endLine = editor.getCursor("to").line;
    let compareSelection = curLineText;
    if(startLine !== endLine) {
        // already multiple lines selected
        compareSelection = editor.getRange({ line: startLine, ch: 0 }, { line: endLine, ch: editor.getLine(endLine).length })
    }
    if(getCurSelection === compareSelection) {
        // if line is already selected then extend selection to the line below
        editor.setSelection({ line: startLine, ch: 0 }, { line: endLine + 1, ch: editor.getLine(endLine + 1).length });
    } else {
        const matchBullet = curLineText.match(/^[ \t]*(.*)/);
        if(matchBullet) {
            // this is to account for if in code files like templater select the line content without the prepended indented spaces
            const foundPosStart = curLineText.indexOf(matchBullet[1]);
            const selectedWithoutSpace = editor.getRange({ line: curLineNo, ch: foundPosStart }, { line: curLineNo, ch: curLineText.length });
            if(getCurSelection === selectedWithoutSpace) {
                editor.setSelection({ line: curLineNo, ch: 0 }, { line: curLineNo, ch: curLineText.length });
            } else {
                editor.setSelection({ line: curLineNo, ch: foundPosStart }, { line: curLineNo, ch: curLineText.length });
            }
        }
    }
    return;
}
const secondSelection = getCurSelection === foundContent ? true : false;

switch(secondSelection) {
    case false:
        const foundPosition = curLineText.indexOf(foundContent);
        editor.setSelection({ line: curLineNo, ch: foundPosition }, { line: curLineNo, ch: curLineText.length });
        break;
    case true:
        // list item already selected so now select all children
        const activeFile = app.workspace.getActiveFile();
        if(!activeFile) { return; }
        const mdCache = app.metadataCache.getFileCache(activeFile);
        if(!mdCache) { return; }
        const mdCacheListItems = mdCache.listItems;
        if(!mdCacheListItems) { return; }
        let foundParentLine = false;
        let foundLastChild = false;
        let foundLastChildLine = curLineNo;
        mdCacheListItems.forEach(eachLI => {
            if(foundParentLine === true && foundLastChild === false) {
                if(eachLI.parent >= curLineNo) {
                    foundLastChildLine = eachLI.position.start.line;
                } else {
                    foundLastChild = true;
                }
            }
            if(eachLI.position.start.line === curLineNo) { foundParentLine = true; }
        });
        editor.setSelection({ line: curLineNo, ch: 0 }, { line: foundLastChildLine, ch: editor.getLine(foundLastChildLine).length });
        break;
}

return;
%>

Here is a loom video demo: https://www.loom.com/share/4ac0c7894a3343cd81f7b86d5eff7bf9