Latest stable version of paper.
Based on Material Design specs list item height must be:
https://material.io/design/components/lists.html#specs
But now List.Item component height are:
<List.Item
title="Trello"
left={props => <List.Icon icon="folder" />}
description="Project 1, Project 2"
/>
<List.Item
title="Trello"
left={props => <List.Icon icon="folder" />}
/>
<List.Item
title="Trello"
/>

Yes, List.Item lacks some variants.
@agat wanna make a PR?
If no one working on this issue, I would like to work on it.
There is a desire to try to do it, but there is no time in the coming days.
@Taym95 Fell free to submit PR :)
@Taym95 Have you had a chance to take a stab at this?
I would like to give a shot on this issue too!
Can somebody quickly tell me how I can test the component after making changes?
@mitulsavani There is an Example app in Example directory. For more informations check Contributing Guide
Fix is included into 3.0.0-alpha.0.
Most helpful comment
If no one working on this issue, I would like to work on it.