Top 3 Aspects of SharePoint Mesh

The following are the top 3 aspects of SharePoint Mesh:

1. Immersive Spaces in Teams: SharePoint Mesh allows users to create immersive spaces in Teams meetings. 
2. Custom Event and Template Creation: SharePoint and OneDrive can be utilized to create custom events and templates for Mesh.
3. Deployment Planning: Before deploying Mesh, it is important to gather the deployment team, verify licenses and policies.

Top 4 Average Formulas in SharePoint

The following are the top four average formulas in SharePoint:

1. Average of two columns: To calculate the average of two columns, use the following formula: =[Column1]+[Column2])/2.
2. Average of multiple columns: To calculate the average of multiple columns, use the following formula: =AVERAGE([Column1], [Column2], [Column3]).
3. Average of selected items: To calculate the average of selected items in a choice column, use the following formula: =AVERAGE([Choices]).
4. Average of a column with errors: To calculate the average of a column with errors, use the following formula: =IF(ISERROR([Column1]/[Column2]), "-", [Column1]/[Column2]).

Top 4 Count Formulas in SharePoint

The following are the top four count formulas in SharePoint:

1. Count: This formula counts the number of cells in a range that contains numbers.
2. Countif: This formula counts the number of cells in a range that meet a certain condition.
3. Sum: This formula adds up the values in a range of cells.
4. Average: This formula calculates the average of the values in a range of cells.

Top 4 External Web parts for SharePoint

The following are the top four external web parts for SharePoint:

1. Planner: Displays tasks and progress from team boards plans.
2. Twitter: Displays individual tweets and full feeds.
3. Office 365 Connectors: Used to embed information from 3rd party services such as Bitbucket, JIRA, and RSS.
4. Kindle Instant Preview: Used to reference an important Kindle book with one-click to preview or buy.

Top 3 Items About SharePoint Online Widths

The following are three key information items on SharePoint Online widths:

1. SharePoint Online uses a responsive grid system based on the Office UI Fabric The basic grid in the SharePoint desktop experiences is a 12-column structure.
2. In a communication site the max width listed as being 1204 px.
3. In a team site the max width is listed as being 1204 px.

Note: these aspects may vary based on your screen size, system and layout of the page.

Top 3 SharePoint Themes

The following are the top three SharePoint themes:

1. Teal: One of the default themes that comes with SharePoint. This theme has a calming effect and is easy on the eyes.
2. Indigo: A custom theme that can be defined using SharePoint’s JSON schema. This theme had a modern look and feel, with a focus on simplicity.
3. Warm Gray: Another default theme that comes with SharePoint. This theme has a professional look and feel, with a focus on readability.

Top 4 Button Aspects in SharePoint Online

The following are the top four button aspects in SharePoint Online:

1. Button web part: This web part lets one easily add a button to a page with a label and link.
2. Quick Links web part: This web part allows one to capture links on the page and allows for several different layouts/customizations.
3. Call to action web part: This web part allows for a button link along with custom text to be utilized. The button the end user clicks can be set and styled as needed.
4. Navigation: This is a navigation option in SharePoint Online that allows for links and menus to be utilized to suit one’s needs.