People call mei's team cancer since its the most common and easier to get. Like most meta tems, it wins you the fight so long as you have higher initiative, even if your BP is lower.

But it is not the only one.

Danzo, SN, FM iruka is also a meta team which can win you the fight if SN moves first. The lightning blitz team wins you the fight if your main moves first and you are aiming at mabui.
Provided you have a move 1 immobile chase and you move first you will more often than not win the fight. Same with barriers. If you want ot win in pvp focus on initiative and nothing else.

Exceptions to this are the very expensive meta teams which include hokage or susanoo ninjas.

As for the OP's question, if you have iruka 3* try FM, SN iruka danzo team, it is very strong. Otherwise the water meta team should suit you just fine. Take into account that lightning blitz teams will be severly impaired by the arrival of masked obito and han. When those teams start to disappear, the roshi teams might me bore common since roshi will have better chances of survival against random opponents. This in turn might deter a bit the water cancer triple healer teams (that is cancer since the game becomes a luck battle of who heals better in turn 10 or who had more life to begin with), due to roshi's ignite and constant buff (as well as jonin minato).

So yea, the iruka-SN-FM-danzo team and the mei-tenten-mabui-WM are probably good lineups to bank for right now.

x-x-x
danzo - SN -SN clone
FM - iruka - X

The talents are pretty felxible, depenfing on what you want. You need however the imobile chase so i would go:

4- 4 (3 if you have slower move 1) - 3 - 2 - 1 for a full control team, but cna be changed in order to make it more offensive.

Summon rhino or equivalent purple summon.

Iruka has momve 2 interrupt, move 1 ltriggers combo each timewith SN and immobile chase. Danzo move 3 can save a unit with his mystery. SN is your dps move 2 and main can heal debuffs as well as send them back to the opponent.

If you have a faster move 1 than the opponent you basically control the whole fight. Again you can change the main's mystery to make it more offensive.