A better word is Disciple, this was the original usage of the term and a description which your group would seem to match. Of course, all of the original disciples considered Jesus to be their Lord and this terminology was used extensively throughout both the new and old testaments. Regardless, your case is more fitting the other thread than this one. That’s about folks who call themselves Christian despite not being particularly interested in Christ. This is about the claim that somehow being a “good guy” makes one Christian. (Or even is Christianity)