I really wanted the Kasikorn account 3 years ago because the phone app really is good. I went all over Bangkok and they all said they wanted a WP. I then remembered i did once have an account with them when they was the Thai Farmers bank. With persistence i got the Nana Nue branch to do it. Cost me 2500 baht for a years insurance but i swallowed it and took it.
I think if you have the account a while, you may, like me have a visa card. It's when it runs out it is replaced with a Union pay card. New accounts get the Union pay card straight away. Luckily i also have an account with Kasikorn.
I know some people don't have a choice but if you can avoid Bangkok bank. They don't issue visa cards anymore, only that stupid Union pay card. That's as much use outside of China as a Pink Thai ID card. 😉