Mod/60s long sleeved shift dresses : r/findfashion

I am searching for this kind of style clothes, but does anyone know how do you call this and does anyone know some online shops for similar clothes? (Not too expensive)

Long Mod Dress

Need this sweater! : r/TheTraitors

Can you help me make my 77 year old moms dream come true by finding her this or very similar dresses : r/Weddingattireapproval

Vtg 60s Yellow on Blue Roll Neck Mod Shift Dress Geometric Floral - med – Better Dresses Vintage

60s Mod Dress

60s Mod Dress : r/VintageFashion

1960s Long Sleeve Dresses

60s Mod Shift Dress

Mod/60s long sleeved shift dresses : r/findfashion