It's tough to give specific names without risking defamation. All we can do is talk about allegations and things we've heard, without providing a clear answer as would be the case in a court of law, say.
That said, there are definitely people spreading the Kremlin's messaging. Some have collaborated on articles posted on Russia Today, including a professor who was asked to testify as part of the public inquiry on foreign interference. He said we should pull back on aid for Ukraine and was spreading the Kremlin's narrative. His name is Paul Robinson. It's a matter of public record.
Those kinds of comments can be very dangerous when it comes to the Russian diaspora.