Anything not covered is something others can speak to better.
Core needs
I don't use speech recognition on desktop. Mobile speech recognition includes the Voice typing... feature (see top-right hamburger menu while editing notes) and auxiliary solutions like those from this thread: Voice memos to Joplin text notes
File > Export all > MD - Markdown exports all Joplin notes. To export a notebook or note, right-click the item > Export > MD - Markdown.
For easy export to Google Docs and Microsoft Word, pair existing Joplin export options with an external file format conversion program like pandoc. See this thread about a similar request for context: Plugin Request: Export to RTF or Docx
Short term need
You choose the desired file format upon importing. If the import doesn't work or doesn't satisfy the need in your footnote, someone else can help you out.
Bigger needs
For exporting notes to a blog, check out this Markdown conversion app:
You can also check if the HTML export options meet your needs.
For sharing notes with clients in addition to collaborative editing, check out Pro or Teams plans on the Joplin Cloud plans page.
Nice to haves
I'd use Mermaid for Gantt charts. First, test Mermaid out by first pasting the Mermaid code block from the Diagrams section of the Joplin Markdown Guide into a new note. Then, create a Gantt chart by replacing everything but the first and last lines with the Syntax section code from the Mermaid Gantt syntax page.
View > Zoom In enlarges touch targets.
Hope this helps.