+1 to the expand selection request…
An Obsidian command equivalent to “find_under_expand” (Sublime) or “editor.action.addSelectionToNextFindMatch” (VS Code) can be helpful in workflows where quickly cleaning pasted text is desired (i.e. removing pasted formatting, html tags, bullets, etc.) or adding text or formatting to multiple lines at once which share the same structure (e.g. adding a newline after all lines beginning with ‘#’).