Well-informed about synonyms

What is another word for Well-informed about?

• familiar with
• acquainted with
• au fait with
• au courant with
• knowledgeable about
• abreast of
• conversant
• at home with
• well versed in
• informed about
• up-to-date on
• up to speed on
• in the loop about
• cognizant of
• conversant with
• up-to-date with
• well up on
• up to speed with
• in the know about
• enlightened of
• in the swim about
• experienced in
• skilled in
• practised in
• versed in
• well up in
• proficient in