HELP! Are these known for indents or could these be VFLs?

Top pic is the most recent then they go in order on the pics with 3 but I took all of these today to compare (hence the cheapies lol) after I thought I saw a faint line on the first one this morning. I honestly see a consistent verrrrry faint line on all three. Am I crazy or does anyone else see it? I’ve never used this brand before either so I wasn’t sure if they were indents possibly. Thanks!

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