One question regarding to Loba, why is she in the healer category?

Generally what @KelRiever said. Support doesn't  translate as healer, Loba is supporting by grabbing items from long range, especially ammo. Honestly Respawns fault for not making sure every class has variety, how team based game should be. Instead the game is over saturated with movement characters, maps that cater to them and little options to slow them down. They

also hide behind this by giving some characters extra abilities "Gibby fast rez, Mirage Invisi rez, Crypto banner grab, the recent issue with non recons getting scans albeit, its a different compared to this one".

@Xubunnytwo Ash is jack of trades "recon passive, defense tactical, movement ult", an issue that apparently Respawn didn't learn from season zero, "characters should be focused".

When game launched, Path was support, why ? Cause of the towers, only Path can touch em, and it's tells the team where to go, but problem - his tac and ult have the same purpose as Wraith "solo move, team move". As much the passive helps the team, it doesn't significantly outway his play style, so seasons later, he becomes assault "imo, he should have stayed this way" but even later, the Recons "we only have two at this moment" need more importance, so Path is made Recon, so all recons can use towers ... and new problem - it was already established that recons tell us about the other teams position - something Path never did. But hey, his playerbase rallies behind his movem- oh ... Valkyrie is in the game, she has movement, and while she doesn't scan like BH and Crypto, she still scans "I know I skipped the arc where Respawn made sure Path didn't swing good anymore, but it doesn't have much to do with his class bouncing."

Short version - Ash has 3 abilities that could have been in a kit of 3 different characters, becoming a jack of trades - making her hard to place for a general purpose, unlike most.