Yes, I struggled to get a semblant of similar styles between the pictures, despite the same suffixes or playing with 'remixes'.

Sometimes, adding one extra word to the prompt (even though it doesn't describe the style) will change the whole visual style or change the thing you're trying to highlight.

It was my first time with Midjourney, I'm sure there are tricks to improve on that. Might revisit the images, I do agree that the styling inconsistencies don't look too good.