much of a muchness

US /ˈmʌtʃ əv ə ˈmʌtʃnəs/
UK /ˈmʌtʃ əv ə ˈmʌtʃnəs/
"much of a muchness" picture
1.

very similar; almost the same

:
All the candidates for the job were much of a muchness, making it hard to choose.
When it comes to fast food, most chains are much of a muchness.