Every Flash ranked from weakest to strongest
5. Kid Flash
Wally West goes on to become The Flash in the comics, but in his younger years he is often referred to as Kid Flash. We saw this adapted in The CW's version of The Flash when Keiynan Lonsdale portrayed the character on the show. In the third season, Wally became Kid Flash and joined Barry Allen on plenty of missions, helping him defeat Savitar. He then jumped on over to DC's Legends of Tomorrow where he helped the Legends in their battle against Mallus.
In the Flashpoint timeline, Wally was portrayed as a formidable superhero, protecting Central City from harm. The writing never did him that much justice in the show's main timeline as he never really graduated from the young-speedster-in-training category it had placed him in when he was on the show full-time. Much of the third season was spent showing him how to master his abilities (which he did) before relegating him to a supporting hero who either ended up trapped in the Speed Force or injured.
When Lonsdale left the show, it was revealed that Wally was traveling the world and eventually formed a strong spiritual connection with his identity, powers, and the Speed Force. When he returned sporadically, we saw glimpses of how his abilities had grown, as he could now move so fast that he left after-images everywhere he ran (making it hard to know where the real Wally actually was at all times) and even form electrical shapes with his hands.
Wally found inner peace and became a much more accomplished superhero because of that, but as the show never really highlighted his abilities when he was a full-time Arrowverse character and often relegated him in the process, it's hard to know just how powerful he is. We wish they had treated us to more of Wally.