Viewing New and Recent Connections and Contacts in Linkedin

You can view a list of your 1st-degree Connections on the Connections page. You can sort your connections by name or by most recently added.

To sort your connections list to show the most recently added at the top:

1. Click the  My Network icon at the top of your LinkedIn homepage.
2. Click See all below Your connections on the left rail.
3. Click the Sort by  dropdown above your connection list and select Recently added (which is usually selected by default).

You can view a list of your synced and imported contacts from the Contacts page.

To view and sort your contacts list to show the most recently added at the top:

1. Click the  My Network icon at the top of your LinkedIn homepage.
2. Click See all below Your connections on the left rail.
3. Click  Manage synced and imported contacts on the right rail.
4. Click the Sort by  dropdown above your connection list and select Recently added (which is usually selected by default).

Note: You can only sort by Recently added for synced contacts.

Link: https://www.linkedin.com/help/linkedin/answer/3022/viewing-new-connections-and-contacts?lang=en