1. Chansey - better overall bulk than Blissey
2. Dusclops - bulkier than Dusknoir, great defensive spinblocker
3. Porygon2 - very bulky, has Recover, and Trace is potentially very useful
4. Murkrow - fairly bulky, has priority PerishTrapping and Roost thanks to Prankster
The rest of these should only really be used in lower tiers, where their fully evolved forms can't be used. Otherwise, they're very outclassed. They're all useful because they do the same things their fully evolved forms do, but are usable in lower tiers (and some are overall bulkier, like Rhydon and Tangela)
5. Rhydon
6. Ferroseed
7. Tangela
8. Gligar
9. Magneton
10. Golbat
11. Gurdurr
12. Shelgon
13. Metang
14. Duosion
15. Piloswine
Keep in mind that these are just my opinions. I have seen all of these Pokemon used to great effect with Eviolite, in various tiers