Fashion designer reviews Skims vs SHEIN dupes | Which one is better?

Fits everyone bodysuit
https://skims.com/products/fits-everybody-square-neck-bodysuit-moonstone

Shein dupe:
SHEIN Solid Fitted Tee

Shein Bodysuit variation dupe:
SHEIN BASICS Solid Form Fitted Bodysuit

https://api-shein.shein.com/h5/sharejump/appsharejump?lan=en&share_type=goods&site=andshza&localcountry=za&currency=ZAR&id=1729288&url_from=GM7194695509468385280

Product 1:
Skims:
https://skims.com/products/soft-lounge-tank-onyx

Shein:
SHEIN Rib-knit From Fitted Tank Top

https://api-shein.shein.com/h5/sharejump/appsharejump?lan=en&share_type=goods&site=andshza&localcountry=za&currency=ZAR&id=2819983&url_from=GM7194682307472404480

https://api-shein.shein.com/h5/sharejump/appsharejump?lan=en&share_type=goods&site=andshza&localcountry=za&currency=ZAR&id=1550426&url_from=GM7194696384886738944

https://api-shein.shein.com/h5/sharejump/appsharejump?lan=en&share_type=goods&site=andshza&localcountry=za&currency=ZAR&id=3349272&url_from=GM7194689275264634880

https://api-shein.shein.com/h5/sharejump/appsharejump?lan=en&share_type=goods&site=andshza&localcountry=za&currency=ZAR&id=2893792&url_from=GM7194670897120030720

Thing 3:
Skims Cotton Jersey Long sleeve
https://skims.com/products/cotton-jersey-long-sleeve-t-shirt-soot

T-shirt variation:
SHEIN BASICS Mock Neck Rib-knit Tee
https://api-shein.shein.com/h5/sharejump/appsharejump?lan=en&share_type=goods&site=andshza&localcountry=za&currency=ZAR&id=1536307&url_from=GM7194679227087368192

Shein Bodysuit dupe:
SHEIN 1pc Square Neck Solid Bodysuit

Product 2:
What I assumed the fits everyone variety would certainly be;
SHEIN Slim Fit Solid Tee

Skims Fits everyone T-shirt:
https://skims.com/products/fits-everybody-t-shirt-marble

Shein dupe:
SHEIN BASICS Solid Form Fitted Tee

https://api-shein.shein.com/h5/sharejump/appsharejump?lan=en&share_type=goods&site=andshza&localcountry=za&currency=ZAR&id=3169902&url_from=GM7194686886804815872