Again, these will all leave a blank line before the first bullet, number, or indent. If you want something on the start of the next line, without skipping a line, the only way I know is with a single <br />.
If you want to leave a blank line before continuing then you can use a bullet, number, indent, <br /><br /> (that's 2 line break codes), or you can just press ENTER twice on the edit page - when you see a skipped line on the edit page, it *WILL* show up as a skipped line on the view page.