The first isekai a lot of people were exposed to was Sword Art Online which, initially, had closer ties to the real world with a scenario that could (in theory) actually happen. Most recently, though, most isekai have abandoned the "it could happen in real life" angle, leading to crazy farfetched stories.
I hate to say it but one of the most recent ones, about the MC coming back as a vending machine, is really good.