Hi,
This is Manoj, I and my team migrated various projects from SP 2007, 2010, 2013 to 2016, please provide more details to proceed further.
Here you are with Microsoft certified SharePoint experts who are working on SharePoint from the last 12 years. I & my team has completed 125+ SharePoint / Office 365 projects which involved SharePoint branding & customization, Power Apps, flow, BI, Dashboards, workflows, SSO, provider hosted add ins, custom we parts, timer, even receivers and many similar nature use of SharePoint.
I am available on skype, please share your skype id to take it forward.
Regards,
Manoj P