I just went to a Round1 near the Sacramento area. Half of the available arcade space was taken up by claw machines. I guess this is what they mean by the imported games. Other selections of games included a racing game a little more Gran Turismo like in that you could progressively upgrade a vehicle. It seemed this had the ability to save profiles but as it was all in the native Japanese text I'm only guessing. I fumbled through the menu until it let me run a course. DDR, lightspeed challenge, and some other rhythm/beats type games were there but I wouldn't call them anything out of a normal arcade. I went there hoping to find a vr headset type game, which they had, but every one was out of order. Then a handful of the old sit in a booth fixed gun turret shooters, and your basket shoot and see all type games.
They use a charge tokens to a card system which is fine really but every game costs 6+ credits ($1.50). Blew through 20 bucks in about as many minutes. That was my experience, take from that what you will.
That matches my experience at most modern arcades. As a kid I remember going to nickel arcades and being able to play quite a few games with just a dollar. Now I take my kids to one and they burn through 10 dollars in like 5 minutes without even playing any actual games.
It might depend on the location, but they may import other machines like chunithm. Unfortunately claw machines are the big moneymaker, so they'll dominate the space.