Which archers to use?

Depends of Leon's stats, I think I got a perfect Leon as 4 star (+Attack/-Res I think). I heard that he is like Takumi but better.

I pulled that same innes when the banner came out, i was excited since i was pulling for tana and didnt get any blues just red a colorless that round and to my surprise innes appears, so i preceded to check his ivs "+atk okay thats good....wait -spd.....damn"i just slapped a fury and breaker skill on him and called it a day but,he decent enough.

I adore using Leon as an archer because he has defensive bulk that most other archers don't have, which is very useful in arena scenarios where an error in positioning can cost you a streak. Even Life and Death won't gimp his DEF enough to get one-shot by many (unbuffed) melee units. Just be very careful of mages and dragons, of course.

Virion is also pretty popular and powerful and works pretty similarly to Leon. Leon's stronger than him, though, especially if you have a +ATK version. Imho both Leon and Virion are better than Takumi since Takumi has lower base ATK and is 5* exclusive (and harder to get good IVs on).

I've seen some people get good mileage out of Jeorge, too. Death Blow +ATK seems to be pretty popular on him, especially since he has a high Mt weapon, and he's relatively easy to get.

I loved using Klein and only stopped using him outside of Arena Assault once I got Innes. Klein is pretty easy to get and already comes with a fabulous kit. Brave Bow archers are phenomenal, in my experience.

Speaking of, a +ATK -SPD Innes wants a Brave Bow. Any Innes will do great with a Brave Bow, but -SPD archers especially want a Brave Bow. He'll function almost exactly like Klein, but with slightly different stat distribution.

The new Halloween Jakob is promising as a fabulous ranged wall and powerful archer in his own right. I haven't gotten to use him yet, but after a lot of calculations I can confirm that he's hard to kill and severely punishes any unit dumb enough to attack him. If you can get your hands on him I recommend trying him out.

My favourite archers are definitely Innes, Klein, and Leon and I find them all a ton of fun to use. I highly recommend Brave Bow builds on all three of them (although I can see a Close Counter + Slaying Bow + Bonfire build working on Leon too).