This device looks really cool and it says it supports eSim.

@siggy47 another option that is pretty good privacy wise is Calyx Internet Membership from the Calyx Institute. You can read about it on their site but the TLDR is that because the government has required telcoms to reserve some spectrum usage for educational uses Calyx is able to get these hotspots and share them with their members. They use Tmobile so speeds depend on network coverage but the cool thing is you don't actually have a T-mobile account. They don't have any info about you. You aren't their customer.

Now, there are many caveats to this but its a good privacy and performance option. Unlimited hotspots are awesome.