Word's own Dictate button gives you a literal transcript. Speaky Box types clean, punctuated text into Word on your Mac, with ums removed and your terms spelt right, and it works the same in every other app.
Word's Dictate needs a Microsoft 365 subscription, works only inside Word, and types what you said, ums included. Speaky Box removes the ums, fixes the grammar and adds punctuation before the text arrives.
Client names, product names, legal and technical terms. Add them once to the Words list and they're right in every document.
The same key that dictates into Word works in Outlook, Teams, Excel, Mail, Slack and your browser. No per-app setup.