DeanoAustin
Jimmy McCormick
I think all the players you named there have been more consistent (in their best runs) than Dele
Re Bale, I'd suggest you look at him again, still a monster player, the fact that Zidane treats him like brick and plays him randomly and he can still turn up and win games for Madrid is amazing. Maybe he isn't 24 anymore but he's a level above any player we have in the squad by some distance.
Re Eriksen, I think he will do fine in Italy, a little mental reset, more time and space and a decent defensive player next to him, with two forwards to aim at, will be good for Inter.
For my money, Son is the streakiest of that bunch. Moreso than Dele.
On Bale, I'd take him back in a heartbeat and he is still a phenomenal player. I just don't think he's as good as he was a few years back and is past his best.