For the sake of completeness :
Les Républicains, who currently have around 100 députés, are the "official" opposition to Macron in the outgoing legislature (despite the fact that he stole all their policies, and half of their competent politicians).

They will be struggling to maintain half of that in June.

Which pretty much guarantees that the "united" Left will be the Opposition for the next five years. This was my optimistic best-possible outcome, before the presidential elections.

(Because I'm an optimist by temperament and principle, but nobody really believes Mélenchon's punchline about being Macron's Prime Minister)

_{It is rightly acknowledged that people of faith have no monopoly of virtue - Queen Elizabeth II}