Yes, carriers in EU still send out SIM cards in that format, but you can break the edges off to turn it into miniSIM, microSIM or nanoSIM.

e.g., https://m.media-amazon.com/images/I/617HebHVIAL._AC_SY355_.j...

All the sims I have ever received(US) come as a credit card sized item(looks like a smart card) and you break out the size you need. (sim, mini sim, micro sim)

Here in UK you get that from most carriers.

Any US carrier, in my experience.

https://www.flyamz.com/storage/2020/03/USA-SIM-Card-New-ATT-...

https://images5.tanganetwork.com/prod?bucket=tanga-fetched-i...

https://m.media-amazon.com/images/I/61bYyPhpYoL._AC_SL1200_....

TIL the 1FF size for SIMs (see image at https://mobile.twitter.com/phone_museum/status/1287310071907...). Thanks!