You will find that an unbranded tee like this is a reliable basic.
Space Jam Bugs Bunny Looney Tunes Basketball Graphic Blue T-Shirt Men’s XL
What I notice is the crew neck, which has a slight stretch for easy movement.
Joy Division 80s/90s Vintage Unknown Pleasures Thrashed Rare T-Shirt
A nice touch with the short sleeve style is that it never feels too baggy or too tight.
Paquete de 3 Lote de Camisetas sin Mangas Acanaladas 100% Algodón para Hombres
The round neck here is designed to sit comfortably without slipping back.
Lote de Camisetas sin Mangas Acanaladas 100% Algodón para Hombres Paquete de 3
What stands out about the ribbed design is how it works well dressed up or down.