Where in the World is Andrew?

Update: Equal Earth made it as  arcgis.com  base map  globally  and  more ! Details at the bottom...

The title comes from board then computer game "Where in the world is Carmen San Diego?" In my collected poetry and writings, the book's  cover map  depicted how many places I had been to. When Google API was deprecated, Esri(UK) helped me recreate and upload it on  YouTube  five years ago. Esri helped with other projections used here, see Thank Yous at bottom. Many points linked to my  original web  and to my Dad's  slides selection . So let's have a look at how we can improve on that original map cover...

Premise

• The spreadsheet described in the first slide was entered in ArcGIS Pro as an Event Theme.
• To create points, add an ID, order them sequentially and add longitudes and latitudes from Wikipedia. To post them in ArcGIS Pro, go Map > Add Data > XY Point Data.
• To create geodetic lines joining them, use the Geoprocessing tool XY to line.
• As unprojected latitude and longitude are off Wikipedia, leave the projection default GCS_WGS_1984.
• To upload, right click each feature > Sharing > Share as Web Layer, and the default Layer Type: Feature, will post it as Web Mercator.

Note:  Challenger Expedition DIY Web Map  also shows how to post spreadsheets to ArcGIS Online.

Web Scene

• The top globes were created by adding a Globe Scene. Insert > New Map > New Globe Scene.
• Then they were posted in ArcGIS Online using Share > Web Scene

Projections

• ArcGIS Online posts in Web Mercator, but let's create features in the projection of our choice.
• UNCountries were taken  from source , use also  Natural Earth  or browse in ArcGIS Online for Living Atlas features.
• In ArcGIS Pro, go Geoprocessing > Project, search for Equal Earth >Projected Coordinate System > World (Sphere based) > Equal Earth.
• The variants Americas and Asia Pacific will recenter over the Americas or the International Dateline.
• For Spillhaus, suggest you use John Nelson's project template in his  excellent introduction .
• And for complete instructions on alternate projection techniques, Kenneth Field's  excellent post  shows alternative how-to's.

ArcGIS Online

• In order to post in those projections from ArcGIS Pro, share each feature as a vector tile: right click each feature > Sharing > Share as Web Layer, and then select Layer Type > Vector Tile and under Configuration make sure Auto-suggest has right one (correct otherwise).
• Then in ArcGIS Online, go to your new Tile Layer (hosted) > Add to new map to get the desired projection. Note that this new vector tile may not have based maps to match, and that vector tiles post no legend as yet.
• Note that adding vector tile layers requires a Subscription, not a Free-tier account, to work.
• Finally go Add > Search for map, and post the original datasets. Note that Equal Earth will re-project Web Mercator layers on the fly, but not Spillhaus (the original gets over-posted as Web Mercator).

Update2: John Nelson just posted  here  complete instructions to use or create your own projections!

These maps were drawn to improve on Web Mercator projections, which has been prevalent since Google Maps popularised it then ArcGIS Online made its default. But help was on its way in  Mercator, it's not hip to be square  (long read), providing vector tile and other tips used there.

Esri(UK) helped initially with timed data and geodetic lines, thanks  Shaz Qamar . And recently  Bojan Savric  and  John Nelson  launched then popularised Equal Earth then Spillhaus projections. Last but not least  Kenneth Field  always points out the vagaries of map projections and display.

John Nelson later posted Equal Earth base maps (links in intro notice), which made this so easy:

Note however that, while it made it a lot easier to re-post pre-existing data in this exciting  new projection  for the world, Americas, Asia Pacific and Europe, we still need the above to centre the map on the Americas (Equal Earth (Sphere) Americas projection) or the International Dateline (... Asia Pacific projection) unless John Nelson posts those variants too (I asked... stay tuned!).

Not content to await John's variants, I went ahead and used  his instructions  to create blank base maps myself. I submitted them to  Esri Living Atlas , and lo-and-behold they were accepted!

 Noir Equal Earth Null Map  got its name as a play on words with blank (base map) and blanc (French for white) and noir (its opposite) - Living Atlas curating team, however, rightly pointed out one was enough se we posted noir with how-to change colours - this provides a fast rendering base map you can post Equal Earth data, such as the UN Countries mentioned above, and your own.

I used it to post England in more pleasing proportions than WGS84 or Web Mercator, but in a broader context than British National Grid more à-propos in-country. It's a base to  this map .

 Noir Spilhaus Null Map  offers the same in that projection used extensively in this  story map .