Which seems right?
P.S. Google translate offers its own version:
If there were more like you, we could coexist.
It looks like the mixed 2nd/3rd conditional, which is for unreal past events. - if + Past/ present perfect. Ex.
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It looks like the mixed 2nd/3rd conditional, which is for unreal past events.
- if + Past/ present perfect.
Ex. If more were like you, we might have succeeded.
https://www.examenglish.com/grammar/mixed_conditionals.htm
Only #1 fits as written, but you