ARE THERE ANY AUTHENTIC SUNNI REFERENCES THAT HIGHLIGHTS UMAR'S ACTIONS??

The Answer Is There Are:

We Read In Musnaf Of Imam Ibn Abi Shebah
V4, P432, Tradition 37045;

"Narrated Muhammad Bin Bashir From Ubaidullah Bin Umar From Zaid Bin Aslam That His Father Aslam Said:
'When The Homage (Baya) Went To Abu Bakr After The Messenger Of Allah, Ali (As) And Zubair Were Entering Into The House Of Fatima (As) To Consult Her And Revise Their Issue, So When Umar Came To Know About That, He Went To Fatima And Said:
'O Daughter Of Messenger Of Allah, No One Is Dearest To Us More Than Your Father And No One Dearest To Us After Your Father Than You, I Swear By Allah, If These People Gathered In Your House Then Nothing Will Prevent Me From Giving Order To Burn The House And Those Who Are Inside.'

So When Umar Left, They (Ali (As) And Zubair) Came, So She (Fatima (As)) Said To Them:

'Do You Know That Umar Came Here And Swear By Allah To Burn The House If You Gathere Here, I Swear By God That He (Umar) Will Execute His Oath, So Please Leave Wisely And Take A Decision And Don't Gather Here Again.' So They Left Her And Didn't Gathere There Till They Give Baya To Abu Bakr."

It Is Worth Noting The Observation Made In Qeraa Fi Kutub Al-Aqaed, By Farhan Hassan Al-Maliki, P52
"However Ali's Party Was Smaller (In Number) During The Reign Of Umar Than The Reing Of Abu Bakar Al-Sidiq Due To Abandoning Ali On Account Of His Breaking Into Fatima's (As) Home During Abu Bakar Reign, And Forcing Some Sahaba That Were With Ali To Give Baya To Abu Bakar, Thus The Memory Of This Dispute - That Is Proven Via Authentic Chains - Was Deemed A Painful Memory Which They Did Not Like To Recollect"

Abu Muhammad Abdullah Bin Muslim Bin Qutaybah (D.276 Hijri) Who In His Famous Book
Al Imama Wa Al Siyasa
P18-28 States As Follows:

'Abu Bakar Was After Group Of People Who Failed To Give Baya And Gathered With Ali (As), He Sent Umar In Their Direction. He (Umar) Called Them To Come Out Frome The House Of Ali(As), But They Refused To Come Out.
Thus (Umar) Asked (His Men) To Bring Wood, Then He Said:
' I Swear By He Who Controls The Life Of Umar, Of You People Do Not Come Out Of The Thouse I Shall Set Fire On It. Everyone Inside Shall Perish.
Some People Said:
'O Abu Hafs (Umar) Fatima Is Also In This House'. Umar Replied,' I Do Not Care' Then The People Came From The House And Gave Baya Except Ali (As).

Sunni Historian Abul Fida In His Discussion On The Attack On The House Of Fatima (As) Recorded The Event, In A Very Low Key/Cautious Tone, But As A Scholar Of Integrity And Honesty He Has Refused To Cover Up History.

He Has Still Acknowledged That The Event Did Indeed Take Place And Umar Threatend To Burn Fatima (As) Alive:
Then Abu Bakr Sent Umar Bin Khattab To Ali(As) And His Companions With The Objective That Those 'People Gathered In The House Of Fatima (As) Come Out, And That If Anyone Objects To Coming Out Then You Fight Them'.
Then Umar Approached With Fire In His Hands To Set The House Ablaze. At This Point Fatima Approached And Said:
'O Son Of Khattab, Would Do You Dare? Do You Wish To Set My Home On Fire?'
Umar Said:
'Yes, Unless If You Give Baya To Abu Bakar And Enter Into That Which The Majority Of The Ummah Have Agreed To.'

Tareekh Abul Fida (Arabic)
P235
Tareekh Abul Fida, Urdu Translation By Maulana Karrem'ud Deen Al Hanafi, P177-179

Please Note That None Of These References Is At Variance With Another, Rather Two Common Facts Can Be Located In All Of Them, Namely That Umar:

1.Threatend To Set Fire To The Home Of Sayyida Fatima (As).

2. Justified His Conduct On The Basis That Maula Ali(As) And His Supporters Had Failed To Give Baya To Abu Bakar.

The Matter Did Just Not End There. If That Was Not Bad Enough We Also Know That The Home Of Sayyid Fatima (As) Was Raided By The Newly Formed State.

Al-Hafiz Diya Al-Din Muhammad Ibn Al-Wahid Al-Maqdisi (D.643 H) In His Authority Work Al-Ahadith Al-Makhtarat
V1,P88 Stated:

Abu Bakr Said:
'I Wish I Never Violated Or Abandoned The House Of Fatima(As) Even If She Had Waged A War Against Me. I Wish That On The Day Of Saqifa I Had Placed The Affair (I.E. Caliphate) On The Neck Of Either Abu Ubaydah Or Umar So That Such Would Be Commander Of The Believers While I Remained His Vizier'.
The Margin Writer Of Al-Ahadith Al-Mukhtarat Abdulmalik Bin Abdullah Bin Duhaish Has Declared The Tradition As 'Hasan'.

This Proves That Umar Not Only Threatend Bibi Fatima (As) To Burn His House But Also Her House Was Violated By Umar Who Did All This Under The Directions Of Abu Bakar And There Is No Doubt That Umar Burnt The House Because Ali (As) Did Not Give The Baya.

It's Clear From One Of The Hadiths That Ali (As) Did Not Give Baya Even After Umar Threatend To Burn The House. So You Can Imagine What He Did To The House Of Lady Fatima (As) I.E. Burn It. This Is What Caused The Death Of Lady Fatima (As).