Hello,
1/ Provide URL of product with mentioned buttons.
2/ Add this code in Theme Options > Theme custom CSS:
.single-product #wcpay-payment-request-button-separator {display: none;}
3/ https://prnt.sc/ajiChwb4VYNf
https://xstore.helpscoutdocs.com/article/102-wishlist
4/ Yes, you can select Image type for variation swatches.
Watch this video – https://youtu.be/LgzC4iK-j6A
Regards