Mod or console command which will allow me to push followers out of the way

(These mods are more of a general solution that should reduce or minimize talking with most followers.)

I recommend using the mods No NPC Greetings and Move it Dammit for NPC Companions and Followers.

No NPC Greetings will stop NPCs from auto-greeting you or reduce the distance required before an NPC automatically talks to you or greets you. Move it Dammit will increase the distance that Companions and Creatures walk to when being "bumped", making them keep their distance from you at most times and lessening the chances of them talking to you (I wish these were real life mods).

For removal of even more annoying dialogue, also install the Shut The F--- Up mod.

I don't know of a mod that specifically reduces the Spectral Assassin's talking. About the dog, there are several solutions in this related question.

This is an interesting question. Because of this question, I started giving Lydia all sorts of staffs that I found in my current game. She is using paralysis staff with great enthusiasm on top of the conjuration staffs and destruction staffs, so we will add that to our list. I took away chain lightening staff from her because it's an Area of Effect spell staff and it damages me all the time when she uses it. I gave her a healing staff, but she hasn't used it, yet. I'll give her a fear staff when I find one.

[Edit] I made the test more complete by giving Lydia a whole bunch of staffs I do not remember her using before and going through a couple of caves and bandit camps.

Alteration

• Staff of Magelight: No
• Staff of Paralysis: Yes

Conjuration:Banish

• Staff of Banishing: No
• Staff of Daedric Command: No
• Staff of Expulsion: No

Conjure:Conjure

• Staff of the Familiar: Yes
• Staff of the Flame Atronach
• Staff of the Frost Atronach: Yes
• Staff of the Storm Atronach

Conjuration:Reanimate

• Staff of Zombies: Yes
• Staff of Reanimation
• Staff of Revenants
• Staff of Dread Zombies

Conjuration: Soul Trap

• Staff of Soul Trapping: No

Destruction: Yes

Illusion: No

• Staff of Calm: No
• Grand Staff of Charming: No
• Staff of Fear: No
• Staff of Vanquishment: No
• Staff of Fury: No
• Staff of Frenzy: No
• Staff of Courage: No
• Staff of Inspiration: No

Restoration: Restore Health

• Staff of the Healing Hand: No
• Staff of Mending: No

Restoration: Turn Undead (Not tested yet)

• Grand Staff of Turning
• Grand Staff of Repulsion