
Hi @Solanki, Akshaykumar ,
OOTBly I'm afraid this is not possible to show the sites you are a member of and the site owners of those sites together. I would suggest you can search by "contentclass:STS_Site" and go to SharePoint admin center, then search sites under Sites >> Active sites. Click the site name and you can see site owners under Membership tab. Or you can fetch site owners using PowerShell:
#Variables for Admin Center & Site Collection URL
$AdminCenterURL = "https://Contoso-admin.sharepoint.com"
$SiteURL = "https://Contoso.sharepoint.com/sites/marketing"
#Connect to SharePoint Online
Connect-SPOService -url $AdminCenterURL -Credential (Get-Credential)
#sharepoint online powershell get site owner
Get-SPOSite $SiteURL | Select Owner
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