LyX Style, that renders like a \paragraph command?

Question

In the layout/module file format of LyX, is there any method to produce a paragraph style, that renders and exports like

\paragraph{title}
content...

The purpose would be to create layouts, where \paragraphs look as they would in the printed document.

I am aware, that a Style Paragraph exists by default, but I am specifically looking for making the interface more WYSIWYG-like, in order to improve visual clarity. When deeply nested elements occur, especially beyond secnumdepth, it is hard to tell for the formatting if an element is on a higher or lower nesting level. (Added as clarification after Torbjørn's answer)

---

LyX "Style" definitions have an option

LabelType manual

A style

Style CustomParagraph
  Category Sectioning
  LabelType manual
  LatexType command
  LatexName paragraphx
  LabelFont
    Series bold
  EndFont
  LeftDelim "<br/>"
  RightDelim "<br/>"
  Preamble
    \newcommand\paragraphx[1][]{\paragraph{#1}}
  EndPreamble
End

would render the words until the first space bold (non-breaking spaces can be used to render multiple words bold), and export as

\paragraphx[{title}]{
content...
}

While this works, it is ugly. I much rather would have the style exported as

\paragraph{title}
content...

and avoid the auxiliary command \paragraphx[]{}.

Answer 1

Depending on the document class, there should be a Paragraph style by default, is there anything wrong with that?

(The screenshots are from an older version of LyX, as that is what I had available, but I'd expect the same in the latest version.)