Here are the adjusted results after applying the specified adjustments (at least 1 extant post in the year between the time of the OP and 1 year ago, and Member+ post rank):
+----------------+----------------------------------------+
| Adjusted votes | Candidate |
+----------------+----------------------------------------+
| 20 | themepen |
| 12 | Jayconz |
| 8 | summonerrk |
| 7 | maxmueller |
| 6 | su-asa |
| 6 | Porfirii |
| 6 | taufik123 (champion of btalk contests) |
| 3 | m2017 |
| 3 | DaNNy001 |
| 3 | Mahiyammahi |
| 3 | byebyebtc |
| 2 | agbam |
| 1 | TokenTikas |
| 1 | Scarlett_23 |
| 1 | mr_brilliant$ |
| 1 | gallar |
| 1 | unknown op |
| 1 | Gentle_soul |
| 1 | 7Juju |
| 1 | Johnlomape |
| 1 | noorman0 |
| 1 | promocodeudo |
| 1 | Just say |
| 1 | ojinga |
| 1 | leonair |
| 1 | happybitcoinph |
| 1 | zackz5000 |
| 1 | ldl |
| 1 | giftedman |
| 1 | Lida93 |
| 1 | tread93 (my boy) |
| 1 | rduffy |
| 1 | hazink |
| 1 | Franklyn-wood |
| 1 | nheer |
| 1 | Hyudien |
| 1 | Tonimez |
| 1 | abdulzuruku01 |
+----------------+----------------------------------------+
It's very difficult to identify alts with much accuracy, but after looking into the IP logs, it's my opinion that removing votes by alt accounts would not have changed the winner.