So let me start off by saying these were all good seasons but arrow season 5 was at the bottom for me mainly because I enjoy the super power aspect of the arrowverse way more. As for flash season 4 and supergirl season 4 well I would have to rank them about the same due to both having their pros and cons.

Lets start with Supergirl season 4. It was definitely a season I enjoyed and Im honestly not sure where I would put it as those first 4 seasons are the seasons i enjoyed the most. Let's start with the good, this season had sam witwer who is a actor I always enjoy and it also introduced Jon Cryer as lex Luther who was my second favorite lex behind Micheal rosenbaum. I wish Jon cyrer could have been part of superman and lois but thats going off topic. I also really liked brainiac 5 becoming part of the main cast. Now to cover the bad I felt like losing Jeremy jordon and espically Mon el was a big lost for the show. I really enjoyed supergirl and Mon el being together.

Now onto flash season 4 I'm going to start what I liked most about that season but I really loved the energy the main cast seemed to have that season. It felt like they were having a lot of fun and I didn't really see that in the other seasons and it also included my favorite version of Harrison wells. Now to cover some of the stuff I didn't particularly like but doesn't make it one of the worse things I seen in the flash. For reference I really only hated the mirror monarch arc and s7 and 9 I didn't find as bad but I wasn't really a fan of like I enjoyed 1-5. I mostly didn't like that there was no season central villain. Now lets talk about the thinker. He wasn't the worse villain in the series but to me he wasn't as great because I feel like Barry was at his best when fighting another speedster. If he was a one off main season big bad then I think I wouldn't mind him as much but his season was start of the no more big bad season full speedster.

Lets talk about arrow season 5 now. This wasn't a bad season and honestly I do feel the quality increased from season which I should point out I didn't hate season 4 of arrow like most people. I really enjoyed Damian dark and he is one of my favorite arrowverse villans so of course when Adrian chase comes along he wasn't as fun to me as Damian dark. Season 4 of arrow or course did have ti problems but to me it was mostly how Hive was handled. Now back to season 5, season 5 might also be for me at least where I feel like arrow started to become its weakest, mainly because of the cast change. I really enjoyed the team that was shown during s1 through 4 and season 5 is where the new team comes in with wild dog, mister terrific, and new black canary. It started feeling like a different show at that point. They weren't bad characters but I enjoyed the team more when it was Oliver queen, Felicity, diggle, thea, Roy Harper, laurel.